/ Dictionary / Index L logbook: Meaning and Definition of Find definitions for: log•book Pronunciation: (lôg'book", log'-), [key] — n. a book in which details of a trip made by a ship or aircraft are recorded; log. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: logbook (Thesaurus) logarithmic function log chip Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language