ETYM Icel. steggr the male of several animals; or a doubtful as. stagga. Related to Steg.
1. Adult male deer.
2. Chiefly Scottish; a young horse; especially; a young unbroken stallion.
3. A male animal castrated after sexual maturity — compare steer.

1. A social gathering of men only
2. One who attends a dance or party without a companion

ETYM Prov. Eng. or Slang.
To attend a dance or a party without a female companion.