Boyage

rare. [f. BOY sb.², app. with a confusion of -AGE suffix and AGE sb.] Boyhood.

1622–62.  Heylin, Cosmogr., III. (1673), 104/1. When Alexander in his Adolescency or Boyage was sacrificing to the gods.

1798.  Bloomfield, Farmer’s Boy (1817), Pref. 23. Putting the little events of my boyage into metre.