Entry 1 sense Webster, 1913 Rheumy · Rheum·y · IPA /ˈɹumi/ 01 a. Of or pertaining to rheum; abounding in, or causing, rheum; affected with rheum. 1. Of or pertaining to rheum; abounding in, or causing, rheum; affected with rheum. “His head and rheumy eyes distill in showers.” — Dryden. “And tempt the rheumy and unpurged air To add unto his sickness.” — Shak.