Compounds of 耳

• 耳にたこができる
  (exp) to be told or made to hear something so often that you (metaphorically) get calluses on your ears
• 耳に胼胝ができる
  (exp) to be told or made to hear something so often that you (metaphorically) get calluses on your ears
• 聞く耳をもたない
  (exp) to turn a deaf ear to
  to not listen to
  to not get the message
• 聞く耳を持たない
  (exp) to turn a deaf ear to
  to not listen to
  to not get the message
• 壁に耳あり障子に目あり
  (exp) walls have ears (lit: wall have ears, shoji have eyes)