Dactyl
WordNet
noun
(1) A finger or toe in human beings or corresponding body part in other vertebrates
(2) A metrical unit with stressed-unstressed-unstressed syllables
WiktionaryText
Etymology
From , three bones of the finger corresponding to three syllables.
Noun
- A poetical foot of three syllables (— ~ ~), one long followed by two short, or one accented followed by two unaccented.