English Dictionary

but

/bʌt/

adv

(chiefly literary or poetic) Merely, only, just, no more than / (Australia, Tyneside, conjunctive) Though, however.

She is but a dream.

意味（1）

(chiefly literary or poetic) Merely, only, just, no more than

Christmas comes but once a year.

意味（2）

(Australia, Tyneside, conjunctive) Though, however.

Supposin' the chap ain't dead, but? Regan persisted.