(shag) noun
1. A rough coat or mass, as of hair.
2. A wild growth, as of weeds.
3. A long nap on cloth.
4. Cloth having a rough or long nap; formerly, a silk or worsted cloth having a velvet nap.
5. A cormorant.
6. A coarse, strong tobacco: also shag tobacco.
—v. shagged, shag·ging v.t.
1. To make shaggy or hairy; roughen.
2. In baseball, to catch (flies) in practice.
—v.i.
3. To become shaggy or rough.
—adjective Shaggy: also shag·ged (shag′id). [OE sceacga rough hair, wool]

(shag) noun
A dance of the late 1930's, consisting of hopping quickly on alternate feet.
—v.i. shagged, shag·ging To dance the shag.