From chalaq; smooth -- smooth.
see HEBREW chalaq
H2512. challuq
[חַלֻּק] adjective smooth, only plural construct אֲבָנִים חַלֻּקֵי 1 Samuel 17:40 smooth ones of (among) stones = smooth (or smoothest ?) stones Ges§§ 132 R 2. 133, 3 DrSm.