Broken-winded, or in a bloated state in which the wind is
short and difficult. (French, poussi-f, same meaning.)
A fat and pursy man.
Shakespeare has “pursy Insolence,” the insolence of Jesurun, “who
waxed fat and kicked.” In Hamlet
we have “the fatness of these
pursy times” —i.e
. wanton or self-indulgent times.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894