Nod

nod, v. i. To bend or incline the upper part, with a quick motion; to make a slight bow in a ent or salutation; to be drowsy. — v. t. To incline bend, as the head or top; to make a motion of sent, of salutation, or of drowsine with; to signify by a nod. — n. A bending forward of the upper part or top; quick downward or forward motion of the head, in a ent, salutation, drowsine , as a signal, etc.