Methunaka [from methuna] 1. one concerned with (illicit) sexual intercourse, a fornicator Nidd I 139 (in a wider sense). 2. an associate Vin III 66. 3. (neuter) coitus Ja II 360 (= methuna-dhamma commentary).
(masc, masc, from mithuna) associate; housemate Construction: √mith > meth + una + *a + ka methuna + ka