πρίςμα

ατος, τό
A. anything sawn, sawdust, Thphr. HP 5.6.3, AP 11.207 (Lucill.), Gp. 4.15.9; π. λωτοῦ Dsc. Eup. 2.50; μαρμάρου Aët. 12.64; rotten wood, Dsc. 1.66.
2. wound resulting from trephining with a saw, ἰῆσθαι ὡς π. Hp. Morb. 2.15.
II. Geom., prism, Euc. 11 Def. 13.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project