ter·za ri·ma 
(tĕrtsə rēmə)
(tĕrtsə rēmə)n. pl. ter·ze ri·me (tĕrtsĕ rēmĕ)
A verse form of Italian origin, written in lines of 10 or 11 syllables, in which the middle line of each tercet rhymes with the first and third lines of the following tercet.
[Italian : terza, feminine of terzo, third + rima, rhyme.]