[agent-noun f. L. vb. in prec.] A loud or immoderate laugher.
1834. W. H. Ainsworth, Rookwood, I. I. i. 13. That hollow chuckling laugh, distinguishable from all other laughter by an occasional wheezing choke, which threatened, during its paroxysm, to terminate the existence and merriment of the cachinnator.
a. 1871. R. Chambers, Wheesht! They mark a cachinnator as a man to be avoided.
