Meaning

originInherited from Middle English *clemmen, *clammen, from Old English clemman, clæmman (“to press, surround”), from Proto-West Germanic *klammjan (“to squeeze”). Cognate with Dutch klemmen (“to jam, pinch, stick”), German klemmen (“to jam, clamp; to be stuck, stick [to a surface]”).

Etymology from Wiktionary, CC BY-SA 3.0