The enclosed or partially enclosed counter below the baseline of a double-story g.
Definition: In a double-storey g, the loop is the enclosed or partially enclosed counter below the baseline that is connected to the bowl by a link. The enclosed or partially enclosed extenders on cursive p, b, l, and similiar letters are also called loops. Both uppercase and lowercase cursive letters often have extra loops and flourishes. Sometimes the small curve or hook at the end of a j or q is called a loop although it really isn’t.
A curving or doubling of a line so as to form a closed or partly open curve within itself through which another line can be passed or into which a hook may be hooked.