Definitions from Wiktionary ( )

▸ adjective:  At or near the rear.
▸ adjective:  (predicative) Returned or restored to a previous place or condition.
▸ adjective:  Not current.
▸ adjective:  Situated away from the main or most frequented areas.
▸ adjective:  In arrears; overdue.
▸ adjective:  Moving or operating backward.
▸ adjective:  (comparable, phonetics) Pronounced with the highest part of the body of the tongue toward the back of the mouth, near the soft palate (most often describing a vowel).
▸ adverb:  (not comparable) To or in a previous condition or place.
▸ adverb:  In a direction opposite to that in which someone or something is facing or normally pointing.
▸ adverb:  In a direction opposite to the usual or desired direction of movement or progress, physically or figuratively.
▸ adverb:  Towards, into or in the past.
▸ adverb:  Away from someone or something; at a distance.
▸ adverb:  Away from the front or from an edge.
▸ adverb:  So as to shrink, recede or move aside, or cause to do so.
▸ adverb:  In a manner that impedes.
▸ adverb:  (not comparable) In a reciprocal manner; in return.
▸ adverb:  (postpositive) Earlier, ago.
▸ adverb:  To a later point in time. See also put back.
▸ noun:  The rear of the body, especially the part between the neck and the end of the spine and opposite the chest and belly.
▸ noun:  The spine and associated tissues.
▸ noun:  (slang, uncountable) Large and attractive buttocks.
▸ noun:  (figurative) The part of a piece of clothing which covers the back.
▸ noun:  The backrest, the part of a piece of furniture which receives the human back.
▸ noun:  (obsolete) That part of the body that bears clothing. (Now used only in the phrase clothes on one's back.)
▸ noun:  That which is farthest away from the front.
▸ noun:  The side of any object which is opposite the front or useful side.
▸ noun:  The edge of a book which is bound.
▸ noun:  (printing) The inside margin of a page.
▸ noun:  The side of a blade opposite the side used for cutting.
▸ noun:  The reverse side; the side that is not normally seen.
▸ noun:  Area behind, such as the backyard of a house.
▸ noun:  The part of something that goes last.
▸ noun:  (sports) In some team sports, a position behind most players on the team.
▸ noun:  (figuratively) Upper part of a natural object which is considered to resemble an animal's back.
▸ noun:  A support or resource in reserve.
▸ noun:  (nautical) The keel and keelson of a ship.
▸ noun:  (mining) The roof of a horizontal underground passage.
▸ noun:  (slang, uncountable) Effort, usually physical.
▸ noun:  A non-alcoholic drink (often water or a soft drink), to go with hard liquor or a cocktail.
▸ noun:  Among leather dealers, one of the thickest and stoutest tanned hides.
▸ verb:  (intransitive) To go in the reverse direction.
▸ verb:  (transitive) To support.
▸ verb:  (nautical, of the wind) To change direction contrary to the normal pattern; that is, to shift anticlockwise in the northern hemisphere, or clockwise in the southern hemisphere.
▸ verb:  (nautical, of a square sail) To brace the yards so that the wind presses on the front of the sail, to slow the ship.
▸ verb:  (nautical, of an anchor) To lay out a second, smaller anchor to provide additional holding power.
▸ verb:  (UK, of a hunting dog) To stand still behind another dog which has pointed.
▸ verb:  (transitive) To push or force backwards.
▸ verb:  (transitive, obsolete) To get upon the back of; to mount.
▸ verb:  (transitive, obsolete) To place or seat upon the back.
▸ verb:  To make a back for; to furnish with a back.
▸ verb:  To adjoin behind; to be at the back of.
▸ verb:  To write upon the back of, possibly as an endorsement.
▸ verb:  (law, of a justice of the peace) To sign or endorse (a warrant, issued in another county, to apprehend an offender).
▸ verb:  To row backward with (oars).
▸ verb:  (MLE, transitive) To draw from behind the back [+accusative = a knife etc.] (as also back out).
▸ verb:  (Nigeria, transitive) To carry an infant on one's back.
▸ noun:  A large shallow vat; a cistern, tub, or trough, used by brewers, distillers, dyers, picklers, gluemakers, and others, for mixing or cooling wort, holding water, hot glue, etc.
▸ noun:  A ferryboat.
▸ noun:  A surname.
▸ noun:  A settlement on the Isle of Lewis, Western Isles council area, Scotland (OS grid ref NB4840).
▸ noun:  (swimming) Clipping of backstroke. [A backhanded stroke or blow.]

---

▸ Word origin

▸ Words similar to back
▸ Usage examples for back

▸ Idioms related to back
▸ Wikipedia articles (New!)
▸ Popular adjectives describing back
▸ Popular nouns described by back
▸ Words that often appear near back
▸ Rhymes of back

▸ Invented words related to back