Webster's English Dictionary

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rheum

rheum \'ru:m\ \'ru.-me-\ n [ME reume, fr. MF, fr. L rheuma, fr. Gk, lit., 
   flow, flux, fr. r]hein to flow - more at STREAM 1: a watery discharge from 
   the mucous membranes esp. of the eyes or nose  archaic  2: TEARS  - rheumy 
   aj