Definition of big boy in English:

big boy

noun ˈbɪɡ ˌbɔɪ

1A boy who is relatively old or mature; (also) a boy who is old enough to look after himself or to cope with adult experiences (also (informal) used ironically, of a man).
2Informal. A form of address for a man, especially indicating familiarity or approval.
3Informal (originally US). An important or influential man; (also) a leading figure, organization, etc.; a major player. "to play with the big boys": to compete at the highest level, especially precociously or prematurely.
4A piece of heavy artillery.
5A nuclear weapon; an atom bomb or a hydrogen bomb.

Origin

Late 16th century; earliest use found in John Higgins (b. c1544), poet and linguist. From big + boy.

Definition of big boy in US English:

big boy

nounˈbɪɡ ˌbɔɪ

1A boy who is relatively old or mature; (also) a boy who is old enough to look after himself or to cope with adult experiences (also (informal) used ironically, of a man).
2Informal. A form of address for a man, especially indicating familiarity or approval.
3Informal (originally US). An important or influential man; (also) a leading figure, organization, etc.; a major player. "to play with the big boys": to compete at the highest level, especially precociously or prematurely.
4A piece of heavy artillery.
5A nuclear weapon; an atom bomb or a hydrogen bomb.

Origin

Late 16th century; earliest use found in John Higgins (b. c1544), poet and linguist. From big + boy.

词汇	big boy
释义	Definition of big boy in English: big boy noun ˈbɪɡ ˌbɔɪ 1A boy who is relatively old or mature; (also) a boy who is old enough to look after himself or to cope with adult experiences (also (informal) used ironically, of a man). 2Informal. A form of address for a man, especially indicating familiarity or approval. 3Informal (originally US). An important or influential man; (also) a leading figure, organization, etc.; a major player. "to play with the big boys": to compete at the highest level, especially precociously or prematurely. 4A piece of heavy artillery. 5A nuclear weapon; an atom bomb or a hydrogen bomb. Origin Late 16th century; earliest use found in John Higgins (b. c1544), poet and linguist. From big + boy. Definition of big boy in US English: big boy nounˈbɪɡ ˌbɔɪ 1A boy who is relatively old or mature; (also) a boy who is old enough to look after himself or to cope with adult experiences (also (informal) used ironically, of a man). 2Informal. A form of address for a man, especially indicating familiarity or approval. 3Informal (originally US). An important or influential man; (also) a leading figure, organization, etc.; a major player. "to play with the big boys": to compete at the highest level, especially precociously or prematurely. 4A piece of heavy artillery. 5A nuclear weapon; an atom bomb or a hydrogen bomb. Origin Late 16th century; earliest use found in John Higgins (b. c1544), poet and linguist. From big + boy.
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