Alcaïcs. A Greek and Latin metre, so called from Alcoes, a lyric poet, who invented it. Each line is divided into two parts. The first two lines of each stanza of the ninth ode of Horace are in Alcaics. The first two lines of the ode run thus, and in the same metre:
See how Soracté groans with its wintry snow, And weary woodlands bend with the toilsome weight.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894