To roar as a bull, or as a cow when excited. (Ordinarily, a cow lows.)

intransitive. Of a cow or other bovine animal: to make its characteristic deep, resonant vocal sound; to moo.

intransitive. To snore. In early use also: †to snort, grunt (obsolete).

intransitive. To make a lowing noise comparable to that made by a cow. Cf. boo, v. 1 boing, n.1

intransitive. To low or bellow.

intransitive. Of a cow or other bovine animal: to make its characteristic deep resonant vocal sound; to low. Of a person or thing: to make a sound…

intransitive. = moo, v. Also transitive (figurative): to utter (speech) in a voice resembling the lowing of a cow.

intransitive. To low or bellow as a cow does; to make a noise comparable to that made by a cow or similar animal. Cf. boo, n.1 1. Now rare (chiefly E…

Of a child, etc.: to cry, whimper, howl. Alsoquasi- transitive.