BT Šab 141a(18) :ה{א}<נ>י פלפלי מידק חדא חדא בקתא דסכינא שרי‏ : it is permitted (on the Sabbath) to pulverize peppercorns one by one with the hilt of a knife
See the entire entry for dqq vb. to pound

BT Šab 141a(18) :פלפלי מידק חדא חדא בקתא דסכינא שרי תרתי אסיר‏ : as for peppers, crushing one by one with a knife-handle is permitted; two at a time is prohibited
See the entire entry for qat, qattā n.m. handle of a tool