On the HSK 1 vocabulary list, at CEFR level A1.

bái ㄅㄞˊ

    • white
    • in vain
    • free of charge
    • (of facts, the truth, a situation) clear evident (e.g. 真相大白[zhen1 xiang4 da4 bai2])

      bound form

    • plain without additions (e.g. 白飯|白饭[bai2 fan4])

      bound form

    • to explain to state (e.g. 辯白|辩白[bian4 bai2])

      bound form

    • to give a disdainful look (e.g. 白了他一眼[bai2 le5 ta1 yi1 yan3])

      bound form

    • vernacular (e.g. 白話|白话[bai2 hua4])

      bound form

    • spoken lines in opera (e.g. 念白[nian4 bai2])

      bound form

    • reactionary anti-communist (e.g. 白區|白区[bai2 qu1])

      bound form

Where 白 is used

Sources