Definition of rheumatics in English:

rheumatics

plural noun

informal
  • [usually treated as singular] Rheumatism; rheumatic pains:

    ‘he was plagued with the rheumatics’
    ‘the pain of her rheumatics had eased’
    • ‘There is no shivering in the cold, no fear of getting chilled, no danger of rheumatics from sitting on damp grass.’
    • ‘I have rheumatics in the spine now and I've been in hospital three times with my stomach.’
    • ‘Nothing special about a touch of the rheumatics, I tell myself.’
    • ‘There was nothing I could do but put a brave face on it and go after them, but now my rheumatics are playing up something rotten and my truss is all rusty.’

Pronunciation:

rheumatics

/rʊˈmatɪks/