Webster's 1828 Dictionary
PARCHING
ppr. Scorching; drying to extremity. 1. a. Having the quality of burning or drying; as the parching heat of African sands.
Webster's 1913 Dictionary
PARCHING
PARCHING Parch "ing, a.
Defn: Scorching; burning; drying. "Summer's parching heat. " Shak. -- Parch "ing *ly, adv.
Oxford Thesaurus
parching
parching adjective the parching southern sun: searing, scorching, blistering, flaming, blazing (hot ), baking (hot ), burning, fiery, torrid, withering; informal boiling, boiling hot, sizzling, roasting, sweltering.
The Wordsmith Dictionary