גִּיחוּךְ, (גחך) laughter, sport; obscenity. Nidd. 23ᵃ הביאו … לידי ג׳ וכ׳ tried to make R. laugh, but the latter did not laugh.—Sabb. 64ᵃ כומז (Num. XXXI, 50) is translated מחוך, דבר המביא לידי ג׳ ed. (Ms. M., Yalk. Num. 786 מחוך) something which leads to obscenity.