Paralysis affecting part of the body. The "grievously tormented" (Matthew 8:6) refers to the convulsions, foamings, and heavy breathings of the sufferer, giving the appearance of torment, whether himself conscious of pain or not.
These dictionary topics are from Fausset Bible Dictionary, 1949. Public Domain.
Fausset, Andrew R. "Entry for 'Palsy'". "Fausset Bible Dictionary".