/ Dictionary / Index J Jan: Meaning and Definition of Find definitions for: Jan Pronunciation: ( jan for 1 also Du., Ger. yän), [key] — n. a male given name, form of a female given name, form of Jan. Pronunciation: [key] January. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jan (Thesaurus) jam-up Janáček Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language