英语词源字典 - 在线词源网站

fine-toothed (adj.)[fine-toothed 词源字典]: c. 1600, "epicurean, having delicate tastes," from fine (adj.) + toothed "having teeth" (of a certain kind); see tooth (n.). By 1703 as "having fine teeth" (of a saw, file, comb, etc.); fine-tooth in this sense attested from 1804.[fine-toothed etymology, fine-toothed origin, 英语词源]
gap-toothed (adj.): "having teeth set wide apart," 1570s, from gap (n.) + toothed "having teeth" (of a certain kind); see tooth (n.). Chaucer's gat-toothed, sometimes altered to this, is from Middle English gat (n.) "opening, passage," from Old Norse gat, cognate with gate (n.).
snaggle-toothed (adj.): "having crooked, projecting teeth," 1580s) from snag (n.), perhaps a frequentative formation, + toothed "having teeth" (of a certain kind); see tooth (n.). Alternative snaggle-tooth (adj.) is from 1650s; snaggle-tooth (n.) is from 1820.