λῐθοτόμ-ος · lithotom-os — LSJ
for cutting stones, ὄργανα Agath. 1.10: Subst. λ., ὁ, prob. for λιθοδόμος in X. Cyr. 3.2.11; quarryman, IG 1(2).347.36, 2(2).1680.4; mason, Gal. Thras. 43, PAmh. 2.76.9 (ii/iii A.D.).
Subst., λ., ὁ, surgeon who cuts for the stone, Gal. 1.125, Thras. 24; but, who cuts the stone (internally), Ammonius ὁ λ. Cels. 7.26.3.
λ., τό, knife for cutting for the stone, Paul.Aeg. 6.60.