Perhaps an alteration of captain.
- obsolete Pertaining to a hat with a high pointed crown.
#:O fine villain! A silken doublet, a velvet hose, a scarlet cloak, and a copatain hat! O, I am undone! I am undone! While I play the good husband at home, my son and my servant spend all at the university. â€” Shakespeare, The Taming of the Shrew'', s:The_Taming_of_the_Shrew#SCENE_I._Padua._Before_LUCENTIO.27S_house.|Act 5, Scene 1.