/ Dictionary / Index W word class: Meaning and Definition of Find definitions for: word' class" Pronunciation: [key] — Gram. Gram. a group of words all of which are members of the same form class or part of speech. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. wordbook word deafness Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language