负一楼

負一樓
fùyīlóu
basement level 1; floor B1

CEDICT

basement; basement 1

Wiktionary

Entry Composition

1 负 fù
  1. to bear
  2. to carry (on one's back)
  3. to turn one's back on
  4. to be defeated
  5. negative (math. etc)
2 一楼 yīlóu
  1. (Mainland China, Taiwan) ground floor; first floor (in US sense, numbering from one)
  2. ground floor; first floor (in US sense, numbering from one)

Related entries

负一层 fùyīcéng (architecture) basement level 1; floor B1