Usually means: Device securing access or closure.
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We found 64 dictionaries that define the word lock:

General (27 matching dictionaries)
  1. lock: Merriam-Webster.com
  2. lock, lock: Oxford Learner's Dictionaries
  3. lock, lock: American Heritage Dictionary of the English Language
  4. lock: Collins English Dictionary
  5. lock: Vocabulary.com
  6. Lock, lock: Wordnik
  7. lock: Cambridge Advanced Learner's Dictionary
  8. Lock, -lock, lock: Wiktionary
  9. lock: Webster's New World College Dictionary, 4th Ed.
  10. lock: The Wordsmyth English Dictionary-Thesaurus
  11. lock: Infoplease Dictionary
  12. Lock, lock: Dictionary.com
  13. lock (1), lock (2): Online Etymology Dictionary
  14. lock: Cambridge Essential American English Dictionary
  15. Lock (canal), Lock (computer science), Lock (database), Lock (device), Lock (film), Lock (firearm), Lock (rugby union), Lock (security device), Lock (software engineering), Lock (surname), Lock (water navigation), Lock (water transport), Lock, The Lock (Constable), The Lock (Fragonard): Wikipedia, the Free Encyclopedia
  16. Lock: Online Plain Text English Dictionary
  17. lock: Webster's Revised Unabridged, 1913 Edition
  18. lock: Rhymezone
  19. lock: AllWords.com Multi-Lingual Dictionary
  20. lock: Webster's 1828 Dictionary
  21. lock: Free Dictionary
  22. lock: Mnemonic Dictionary
  23. Lock, lock: LookWAYup Translating Dictionary/Thesaurus
  24. lock: Dictionary/thesaurus
  25. lock: Wikimedia Commons US English Pronunciations

Business (5 matching dictionaries)
  1. MoneyGlossary.com (No longer online)
  2. Lock: Bloomberg Financial Glossary
  3. Lock: eyefortransport e-commerce transportation glossary
  4. lock: Legal dictionary
  5. Lock: Financial dictionary

Computing (6 matching dictionaries)
  1. lock: Computer Telephony & Electronics Dictionary and Glossary
  2. Lock: Database Glossary
  3. Webopedia (No longer online)
  4. I T Glossary (No longer online)
  5. Technopedia (No longer online)
  6. Lock (device), lock: Encyclopedia

Medicine (3 matching dictionaries)
  1. Dorland's Illustrated Medical Dictionary (No longer online)
  2. online medical dictionary (No longer online)
  3. lock: Medical dictionary

Miscellaneous (4 matching dictionaries)
  1. Brilliant Dream Dictionary (No longer online)
  2. LOCK: Acronym Finder
  3. AbbreviationZ (No longer online)
  4. lock: Idioms

Religion (3 matching dictionaries)
  1. Lock: Easton Bible
  2. Lock: Smith's Bible Dictionary
  3. Scientology® and Dianetics® (No longer online)

Science (3 matching dictionaries)
  1. lock: LITTLE EXPLORERS(TM) Picture Dictionary
  2. lock: Archaeology Wordsmith
  3. lock: MATH SPOKEN HERE!

Slang (4 matching dictionaries)
  1. Lock (offensive): Racial Slur Database
  2. lock, lock, lock, lock: Green’s Dictionary of Slang
  3. Totally Unofficial Rap (No longer online)
  4. lock: The Folk File

Sports (4 matching dictionaries)
  1. Lock: Dan's Poker
  2. Lock: Gambling Glossary
  3. Hickok Sports Glossaries (No longer online)
  4. Texas Hold'em Dictionary (No longer online)

Tech (5 matching dictionaries)
  1. AUTOMOTIVE TERMS (No longer online)
  2. Locksmith Dictionary (No longer online)
  3. Lake and Water Word Glossary (No longer online)
  4. Schlumberger Oilfield Glossary (No longer online)
  5. SeaTalk Dictionary of English Nautical Language (No longer online)

(Note: See locked as well.)

Definitions from Wiktionary (
)
American English Definition British English Definition
noun:  Something used for fastening, which can only be opened with a key or combination.
noun:  (computing, by extension) A mutex or other token restricting access to a resource.
noun:  A segment of a canal or other waterway enclosed by gates, used for raising and lowering boats between levels.
noun:  (firearms) The firing mechanism.
noun:  Complete control over a situation.
noun:  Something sure to be a success.
noun:  (gambling) Synonym of Dutch book
noun:  (rugby) A player in the scrum behind the front row, usually the tallest members of the team.
noun:  A fastening together or interlacing; a closing of one thing upon another; a state of being fixed or immovable.
noun:  A place impossible to get out of, as by a lock.
noun:  A device for keeping a wheel from turning.
noun:  A grapple in wrestling.
verb:  (intransitive) To become fastened in place.
verb:  (transitive) To fasten with a lock.
verb:  (intransitive) To be capable of becoming fastened in place.
verb:  (transitive) To intertwine or dovetail.
verb:  (intransitive, break dancing) To freeze one's body or a part thereof in place.
verb:  To furnish (a canal) with locks.
verb:  To raise or lower (a boat) in a lock.
verb:  To seize (e.g. the sword arm of an antagonist) by turning one's left arm around it, to disarm them.
verb:  (Internet, transitive) To modify (a thread) so that users cannot make new posts in it.
verb:  (Internet, transitive, Wikimedia jargon) To prevent a page from being edited by other users.
verb:  (intransitive, rugby) To play in the position of lock.
noun:  A tuft or length of hair, wool, etc.
noun:  A small quantity of straw etc.
noun:  (Scots law, historical) A quantity of meal, the perquisite of a mill-servant.
noun:  A surname.
noun:  An unincorporated community in Knox County and Licking County, Ohio, United States.
noun:  A town in Elliston district council area, Eyre Peninsula, South Australia; from the surname.

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    silver,     gold,     bronze,     black,     gray,     copper,     nickel,     platinum,     rust,     charcoal



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Colors:
    silver,     gold,     bronze,     black,     gray,     copper,     nickel,     platinum,     rust,     charcoal



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