What is the meaning of Brag?

A boast or boasting; bragging; ostentatious pretence or self-glorification.

The thing which is boasted of.

The card game three card brag.

To boast; to talk with excessive pride about what one has, is able to do, or has done; often as an attempt to popularize oneself.

Excellent; first-rate.

Brisk; full of spirits; boasting; pretentious; conceited.

Proudly; boastfully.

bang, crash

imperative of brage

bridge

malt (sprouted grain used in brewing)

Source: wiktionary.org