/ Dictionary / Index L lifeboat: Meaning and Definition of Find definitions for: life•boat Pronunciation: (līf'bōt"), [key] — n. a double-ended ship's boat, constructed, mounted, and provisioned so as to be readily able to rescue and maintain persons from a sinking vessel. a similarly constructed boat used by shore-based rescue services. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lifeboat (Thesaurus) lifeblood lifeboatman Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language