/ Dictionary / Index C common rafter: Meaning and Definition of Find definitions for: com'mon raft'er Pronunciation: [key] a rafter having no function other than to bear roofing. Cf. principal rafter. See diag. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. common property common ratio Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language