What is "citrus bergamia"

Bergamot \Ber"ga*mot\ (b[~e]r"g[.a]*m[o^]t), n. [F. bergamote, fr. It. bergamotta; prob. a corruption of Turk. beg arm[=u]di a lord's pear.]

1. (Bot.)

   1. A tree of the Orange family ( Citrus bergamia), having a roundish or pear-shaped fruit, from the rind of which an essential oil of delicious odor is extracted, much prized as a perfume. Also, the fruit.

   2. A variety of mint ( Mentha aquatica, var. glabrata).

2. The essence or perfume made from the fruit.

3. A variety of pear.
   --Johnson.

4. A variety of snuff perfumed with bergamot.

   The better hand . . . gives the nose its bergamot.
   --Cowper.

5. A coarse tapestry, manufactured from flock of cotton or hemp, mixed with ox's or goat's hair; -- said to have been invented at Bergamo, Italy. Encyc. Brit.

   Wild bergamot (Bot.), an American herb of the Mint family ( Monarda fistulosa).