intransitive verb (-nated; -nating) Etymology: Latin cachinnatus, past participle of cachinnare, of imitative origin Date: 1824 to laugh loudly or immoderately, cachinnation noun
CACHINNATE
Meaning of CACHINNATE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012