wear out
     v 1: exhaust or tire through overuse or great strain or stress;
          "We wore ourselves out on this hike" [syn: {tire}, {wear
          upon}, {tire out}, {wear}, {weary}, {jade}, {outwear}, {wear
          down}, {fag out}, {fag}, {fatigue}] [ant: {refresh}]
     2: go to pieces; "The lawn mower finally broke"; "The gears
        wore out"; "The old chair finally fell apart completely"
        [syn: {break}, {wear}, {bust}, {fall apart}]
     3: deteriorate through use or stress; "The constant friction
        wore out the cloth" [syn: {wear}, {wear off}, {wear thin}]
Source: WordNet® 2.0