noun
large container; large vessel
Literal meaning: a physically large container or vessel. Often used in contrast with 小器 (small container).
この大器には10リットルの水が入る。
This large container can hold 10 liters of water.
noun
person of great talent; person of great caliber
Figurative use: a person of outstanding ability or potential, likened to a large vessel that can hold much. Often appears in expressions like 大器晩成 (great talents mature late).
彼は若いが、将来は大器になるだろう。
He is young, but he will become a person of great talent in the future.
大器晩成という言葉がある。
There is a saying: 'Great talents mature late.'
Composed of 大 (large) and 器 (container, vessel). The figurative sense of a talented person derives from the metaphor of a large vessel that can hold much.