קַמְצָר, Ben Ḳamtsar (denom. of קֹמֶץ, writing four letters simultaneously with four pens between his fingers). Yoma III, 11. Ib. 38ᵇ; Y. ib. III, end, 41ᵇ; Cant. R. to III, 6 של בית ק׳ those of the house of Ḳ.