lens, dis, f.,
a louse's egg, a nit : lendes tolluntur adipe canino, Plin. 29, 6, 35, § 111; Ser. Samm. 5, 72.
lēns tis, f a lentil: Pelusiaca, V. ...
An Elementary Latin Dictionary
·noun A piece of glass, or other transparent substance, ground with two opposite regular surfaces, e...
Webster's Dictionary of the English Language