Archaic meaning related to the kanji 侠 (chivalry). Rarely used in modern Japanese; the sense is mostly encountered in historical or literary contexts.
あの子はきゃんな性格で、初対面でも物怖じしない。
That girl has a pert personality and isn't shy even with strangers.
The spirit of chivalry lies in helping the weak and crushing the strong.
Usually written in kana; the kanji 侠 is rare and may be confused with other readings.
Kanji form is rare; primarily used in literary or historical contexts.
The origin is uncertain. The kanji 侠 means 'chivalry' and is likely an ateji for the archaic sense. The modern sense 'pert, tomboyish' may have developed from a different root, possibly related to おきゃん.