From Longman Dictionary of Contemporary Englishwear down phrasal verb1 SMALLto gradually become flatter or smoother, or to make something become like this, because of rubbing or use My shoes have worn down at the heel.wear something ↔ down Its teeth were worn down.2 WEAKNOT SURE wear somebody ↔ down to gradually make someone physically weaker or less determined It was clear he was being worn down by the rumours over his future. → wear→ See Verb table