Hypertext Webster Gateway: "Are"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Are \Are\ [AS. (Northumbrian) aron, akin to the 1st pers. pl.
forms, Icel. erum, Goth. sijum, L. sumus, Gr. ?, Skr. smas;
all from a root as. ? See {Am} and {Is}, and cf. {Be}.]
The present indicative plural of the substantive verb to be;
but etymologically a different word from be, or was. Am, art,
are, and is, all come from the root as.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Are \Are\, n. [F., fr. L. area. See {Area}.] (Metric system)
The unit of superficial measure, being a square of which each
side is ten meters in length; 100 square meters, or about
119.6 square yards.
From WordNet (r) 1.7 (wn)
are
n : a unit of surface area equal to 100 square meters
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