I.
Etymology: Middle English are, arne, from Old English aron, earun; akin to Old Norse eru (they) are, erum (we) are, Old English is — more at is
present second singular or present plural of be
II. ˈa(a)(ə)r, ˈe(ə)r, ˈär noun
( -s )
Etymology: French, from Latin area
: a metric unit of area equal to the area of a square 10 meters long on each side : 100 square meters — see metric system table