The Collaborative International Dictionary of English v.0.48:

Tetracolon \Tet`ra*co"lon\, n. [Gr. ? with four members; te`tra-
   (see Tetra-) + ? limb, member.] (Pros.)
   A stanza or division in lyric poetry, consisting of four
   verses or lines. --Crabb.
   [1913 Webster]