봉투가 · 봉투를
envelope; bag (plastic or paper)
Example
편의점 점원이 봉투가 필요한지 물어봤어요.
The convenience store clerk asked if I needed a bag.
Word parts
봉 seal+투 cover
Literally 'sealed cover'.
Good to know
Cashiers often ask "봉투 필요하세요?" ("Do you need a bag?"); in Korea bags usually cost extra.
Related words