/ Dictionary / Index U undock: Meaning and Definition of Find definitions for: un•dock Pronunciation: (un-dok'), [key] — Aerospace. Aerospace. —v.t. to uncouple (two spacecraft modules or a spacecraft and space station). —v.i. (of a spacecraft module or spacecraft) to uncouple. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: undock (Thesaurus) undo undocumented Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language