Probably from 'al and quwm; a non-rising (i.e. Resistlessness) -- no rising up.
see HEBREW 'al
see HEBREW quwm
H510. alqum
אַלְקוּם band of soldiers (= Arabic , people; so E. Castle, Thes etc., compare CheJob & Solomon 175; > textual error for אֱלֹהִים Hi compare Now) Proverbs 30:31.