1. Having largeness of size; of much bulk or magnitude; of great size; large. "He's too big to go in there." Shak.
2. Great with young; pregnant; swelling; ready to give birth or produce; -- often figuratively.
"[Day] big with the fate of Cato and of Rome. Addison." --
3. Having greatness, fullness, importance, inflation, distention, etc., whether in a good or a bad sense; as, a big heart; a big voice; big looks; to look big. As applied to looks, it indicates haughtiness or pride.
"God hath not in heaven a bigger argument. Jer. Taylor." --
Big is often used in self-explaining compounds; as, big-boned; big-sounding; big-named; big- voiced.
To talk big
to talk loudly, arrogantly, or pretentiously.
"I talked big to them at first. De Foe." --
Syn. -- Bulky; large; great; massive; gross.