LAT

Lewis Short

mētrum (noun N) = μέτρον:
* A measure; in partic., a poetical measure, metre; a verse (post-Aug.): rhythmi, id est numeri, spatio temporum constant: metra etiam ordine: ideoque alterum esse quantitatis videtur, alterum qualitatis,Quint. 9, 4, 46: metri necessitate cogi,id. 8, 6, 17; 1, 6, 2: metri causā,Gell. 4, 17, 9: Tibulli,i. e. elegiac metre,Mart. 4, 6, 4: exceptis metris Vergilii,i. e. verses,Col. 3, 10, 20 dub.
Charlton T. Lewis, Charles Short, A Latin Dictionary

TLL

s. TLL
Thesaurus Linguae Latinae
memory