anapaest(n = noun.communication) anapest - a metrical unit with unstressed-unstressed-stressed syllables;
is a kind of foot, metrical foot, metrical unit

anapaest, n. (US anapest) Prosody a foot consisting of two short or unstressed syllables followed by one long or stressed syllable.

Derivative:
anapaestic adj.

Etymology:
L anapaestus f. Gk anapaistos reversed (because the reverse of a dactyl)