In poetic metre, which is a metrical foot consisting of a stressed syllable followed by an unstressed one?

In poetic metre, a trochee, choree, or choreus, is a metrical foot consisting of a stressed syllable followed by an unstressed one, in English, or a heavy syllable followed by a light one in Latin or Greek. In this respect, a trochee is the reverse of an iamb.

The adjective form is trochaic. The English word trochee is itself trochaic since it is composed of the stressed syllable /ˈtroʊ/ followed by the unstressed syllable /kiː/.

Henry Wadsworth Longfellow's The Song of Hiawatha, whose meter was taken from Elias Lönnrot's Kalevala, is written almost entirely in trochees, barring the occasional substitution (iamb, spondee, pyrrhic, etc.).

Should you ask me, whence these stories?

Whence these legends and traditions,

With the odours of the forest,

With the dew and damp of meadows,