AM'PHIBRACH, noun [Gr. short.] In poetry, a foot of three syllables, the middle one long, the first and last short; as habere, in Latin. In English verse, it is used as the last foot, when a syllable is added to the usual number forming a double rhyme; as, The piece, you think, is incorrect, why take it?
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI