(w)

(bǐ) used as phonetic bi- or pi-

吡叻 (w)

(bǐlè) Perak (state of Malaysia)

吡啶 (w)

(bǐdìng) pyridine C5H5N

吡拉西坦 (w)

(bǐlāxītǎn) piracetam (loanword); see 乙酰胺吡咯烷酮[yi3 xian1 an4 bi3 luo4 wan2 tong2]