Only when written 白板
Mahjong tile; one of the three dragon tiles.
from Chinese báibǎn
I called pon on the upstream player's white dragon tile.
I discarded the white dragon tile and waited.
shaved pubic area; person with little or no pubic hair
Colloquial, often used in adult contexts. Can refer to the state or a person.
She seems to be shaved down there.
She had hair removal treatment and became hairless.
Since it seemed risky, I discarded the white dragon tile.
白板 read パイパン means the white dragon mahjong tile or, colloquially, a hairless pubic area, while 白板 read はくばん is the ordinary word for a whiteboard; the two share kanji but differ completely in reading and meaning.
From Chinese 白板 (báibǎn, 'white board'). The mahjong sense is the original; the slang sense is a Japanese extension based on the visual metaphor of a blank slate.