Metrical foot

• A poetic foot

Wiktionary Word definitions in Wiktionary
n. (context poetry English) A foot containing any pattern of three short syllables and one long syllable.

Wikipedia Word definitions in Wikipedia
Paeon (, gen.: Παίονος) in Greek mythology was a son of Endymion , king of Elis , and brother of Epeius , Aetolus , and Eurycyda ; from whom the district of Paeonia , on the Axius river in Macedonia, was believed to have derived its name.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
paeon \p[ae]"on\ (p[=e]"[o^]n), n. [L. paeon, Gr. paiw`n a solemn song, also, a p[ae]on, equiv. to paia`n. See P[ae]an .] (Anc. Poet.) A foot of four syllables, one long and three short, admitting of four combinations, according to the place of the long ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
metrical foot of one long and three short syllables (in any order), c.1600, from Latin paeon , from Greek paion (see paean ). Related: Paeonic .