căchinnus (noun M) : id.
* A loud laugh, immoderate laughter, a laugh in derision, a jeering.
* Lit. (class in prose and poetry; also in plur.): tum dulces esse cachinni consuerant,Lucr. 5, 1396; so id. 5, 1402: in quo Alcibiades cachinnum dicitur sustulisse,to have set up a loud laugh,Cic. Fat. 5, 10; Suet. Aug. 98: tollere,Hor. A. P. 113: cachinnos irridentium commovere,Cic. Brut. 60, 216: res digna tuo cachinno,Cat. 56, 2; 31, 14; 13, 5: securus,Col. 10, 280: perversus,Ov. A. A. 3, 287: major,Juv. 3, 100; 11, 2: rigidus,id. 10, 31: temulus,Pers. 3, 87: effusus in cachinnos,Suet. Calig. 32: cachinnum edere,id. ib. 57: cachinnos revocare,id. Claud. 41.—*
* Poet., of the sea (cf. 1, cachinno, II.), a plashing, rippling, roaring: leni resonant plangore cachinni,Cat. 64, 273 (cf. Aesch. Prom. 90' ποντίων τε κυμάτων ὐνήριθμον γέλασμα).

s. TLL