crepax
Could not find crepacem in Logeion dictionaries.
crepacem Adjective: feminine accusative singular, Adjective: masculine accusative singular of crepax
crĕpax, ācis, adj. [crepo],
- sounding, creaking: mola, Maecen. ap. Sen. Ep. 114, 6.
crepāx, pācis (crepo), knisternd, mola (salsa), Maecen. in Sen. ep. 114, 5.
crĕpāx, (16) ācis, qui craquète : Mæcen. d. Sen. Ep. 114, 15.