Moo /(mō)/

Moo

a., adv., & n.
  1. See Mo. [Obs.]

Moo

v. i.

imp. & p. p. Mooed; p. pr. & vb. n. Mooing

  1. To make the noise of a cow; to low; -- a child's word.

Moo

n.
  1. The lowing of a cow.