1.VerbTo cause (someone) physical or mental fatigue.
"The eight hour shift in the mine began to wear Tim down after a few months.; To make the opponent tired after using a strategy while conserving own energy to attack later.; He tried to wear down the bowlers before lunch so he could attack the bowlers after lunch."
2.VerbTo eventually persuade or defeat (someone) through persistent effort.
"At first she refused to buy the kids sweets, but eventually they wore her down."
3.VerbUsed other than figuratively or idiomatically: see wear, down.