boçu

boce +‎ -u.

boçu m (oblique and nominative feminine singular boçue)

1. humpbacked
   • c. 1170, Chrétien de Troyes, Érec and Énide 581–589:

     Aprés li dit Erec et prie :
     „Biaus ostes ! ne vos enuit mie !
     Mes dites moi, se vos savez,
     Qui est li chevaliers armez
     D’unes armes d’azur et d’or,
     Qui par ci devant passa or,
     Lez lui une pucelle cointe,
     Qui mout pres de lui estoit jointe,
     Et devant aus un nain boçu“.

     Then Erec speaks to him and asks:
     “Fair host! Do not be annoyed!
     But tell me, if you know,
     who is the knight armed
     in armour of azure and gold,
     who just passed by here,
     with a lovely maiden beside him,
     who was riding very close to him,
     and before them a hunchbacked dwarf?”