Big (�), a. [Compar.Bigger; superl.Biggest.] [Perh. from Celtic; cf. W. beichiog, beichiawg, pregnant, with child, fr. baich burden, Arm. beac'h; or cf. OE. bygly, Icel. biggiligr, (properly) habitable; (then) magnigicent, excellent, fr. OE. biggen, Icel. byggja, to dwell, build, akin to E. be.] 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.
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.