Lewis & Short

cŏasso (cŏax-), āvi, ātum, 1 [co-axis], to join boards or planks together, Vitr. 7, 1, 5.

1. cŏaxo, āre, v. coasso.

2. cŏaxo, āre, v. n. [the natural sound of frogs; cf. κοάξ], to croak, Suet. Aug. 94; Auct. Phil. 62; Spart. Get. 6.