JMdict entry #1190040

1. noun (common) (futsuumeishi)noun or participle which takes the aux. verb suru archaic crowning a boy with a traditional cap for the first time at a coming-of-age ceremony
   see: 元服・げんぶく・1, 初冠・ういこうぶり・1
2. noun (common) (futsuumeishi) archaic person in charge of crowning the boy at a coming-of-age ceremony