耳金 is read as みみがね (mimigane) and means lug.
みみがね
mimigane
じぼく
eyes and ears
みみ
ear
みみもと
close to the ear
みみより
welcome (news)
みみうち
whispering into a person's ear
みみなれる
to become familiar (to one's ears)
みみひみず
Chinese shrew mole (Uropsilus soricipes)
みみのふじゆう
deafness
みみがくもん
pick-up knowledge
じもくをあつめる
to attract interest
みみどしま
young woman with a lot of superficial knowledge about sex, etc.
みみのひ
World Hearing Day (March 3)