Oxford English Dictionary
1.a. A kind of lyric poem, invented by Archilochus, in which a long line is followed by a shorter one, of metres different from the elegiac; used by Horace in his 5th Book of Odes.
b. an incantation
c. a poem of grave character
2. The part of a lyric ode sung after the strophe and antistrophe.
1. A lyric poem characterized by couplets formed by a long line followed by a shorter one
2. The third division of the triad of a Pindaric ode, having a different or contrasting form from that of the strophe and antistrophe.3. The part of a choral ode in classical Greek drama following the strophe and antistrophe and sung while the chorus is standing still.