laugh Copy link Outline 1. rīsus, ūs2. căchinnus (loud, boisterous) • laugh, laughing (subs.): 1. rīsus, ūs: to set up a laugh, r. tollere, Hor. A. P. 381: to crack one's sides with laughing, (paene) risu corruere, Cic. Q. Fr. 2, 10, med.: to try to provoke a l., r. captare, Cic. Tusc. 2, 7, init. to keep from laughing, risu se continere, Pl. As. 3, 2, 36; risum tenere, Hor. A. P. 5. 2. căchinnus (loud, boisterous): to burst out into a loud laugh, c. tollere, Cic. Fat. 5, 10: Lucr.: Ov.: v. to laugh (3).