지하가 · 지하를
underground; basement
Example
우리 회사 주차장은 지하 2층에 있어요.
Our company's parking lot is on the second basement level.
Word parts
지 ground+하 below
Literally 'below ground'.
Good to know
Floors below ground are 지하 1층, 지하 2층 — like B1 and B2 in English.
Related words