Kagoshima dialect term for a young man roughly between 15 and 25 years old. Not used in standard Japanese.
That young man works hard, doesn't he? (Kagoshima dialect)
Long ago, the young men of the village played active roles in the festival. (Kagoshima dialect)
razorfish; Aeoliscus strigatus
The exact derivation is uncertain; the term is specific to the Kagoshima dialect and is conventionally written with the kanji 兵児.