Mop-head is the head of the mop which is used to mop up.
👁 Wink ;)
However, to follow that very banale comment: mop-head is an insult for a potato-head, or a dumb-head or a turnip-head or a sponge-head because all ressemble the head of the person you wish to insult.
May I suggest that context is all? contexte, context
👁 Confused :confused:
guillaume