HSK10+
jiān, qiān
hairpin
Depicts a hairpin. Ancient form of 笄.
Seal script
幵
jiān
qiān
flat; level
Meaning component in 1 character (1 verified)
笄
Sound component in 2 characters (2 verified)
研 笄
Academia Sinica
Unicode
Baxter-Sagart
CC-CEDICT
MTSU Chinese text computing
李学勤《字源》p.1237-1238