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We found 5 dictionaries with English definitions that include the word third rails:
Click on the first link on a line below to go directly to a page where "third rails" is defined.

General (4 matching dictionaries)

1. third rails: Merriam-Webster.com [home, info]
2. third rails: Collins English Dictionary [home, info]
3. third rails: Wiktionary [home, info]
4. third rails: Dictionary/thesaurus [home, info]

Computing (1 matching dictionary)

5. third rails: Encyclopedia [home, info]

(Note: See third_rail for more definitions.)

Quick definitions from WordNet (third rail) ▸ noun:  a rail through which electric current is supplied to an electric locomotive ▸ Also see third_rail ▸ Words similar to third rails ▸ Usage examples for third rails ▸ Words that often appear near third rails ▸ Rhymes of third rails ▸ Invented words related to third rails