Gray

  1. Proper noun.  (surname, from Middle English) ; originally a nickname for someone with a gray beard or hair.
  2. Adjective.  (chiefly, US) grey.
  3. Noun.  (chiefly, US) grey; an achromatic colour.
  4. Noun.  (two-up, lang en) A penny with a tail on both sides, used for cheating. (Reference: Sidney J. Baker, ''The Australian Language'', second edition, 1966, chapter XI section 3, page 243.).
  5. Noun.  (context, ufology) an extraterrestrial creature with gray skin, bulbous black eyes, and an enlarged head.
  6. Verb.  (US) To become gray or cause to become gray.
  7. Noun.  In the International System of Units, the derived unit of absorbed dose of radiation (radiation absorbed by a patient); one joule of energy absorbed per kilogram of the patient's mass. Symbol: ''Gy''.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.