As a noun mew
is (obsolete) a gull, seagull or
mew can be (obsolete) a prison, or other place of confinement or
mew can be the crying sound of a cat; a meow.
As a verb mew
is (obsolete) to shut away, confine, lock up or
mew can be (of a cat) to meow.
As an interjection mew
is a cat's cry.
As a proper noun micro is
a town in north carolina.