Chorees--abrupt, swift, falling like a keen axe.

--We, by Yevgeny Zamyatin, translated by Bernard Guilbert Guerney in 1960; p. 60 of the 1977 Penguin edition

MW3 says "choree" is a synonym for "choreus" (plural "chorei"), which is "a trochee in classical prosody."

A trochee, of course, being (at least in modern verse) a metrical foot in poetry consisting of a stressed syllable followed by an unstressed syllable; the opposite of an iamb.