big boy

Noun

 * 1)  A large object or person.
 * I've been dying to get behind the wheel of this big boy.
 * 1)  An adult male, considered to be sufficiently mature and independent.
 * He is a big boy and can take care of himself.
 * He is a big boy and can take care of himself.

Translations

 * Finnish: iso poika
 * French: grand garçon