Webster's Revised Unabridged Dictionary · 1913

Parch

Parch (parch) , transitive verb

[Old English perchen to pierce, hence used of a piercing heat or cold, Old French perchier, another form of percier, French percer. See Pierce.]

1.
To burn the surface of; to scorch; to roast over the fire, as dry grain; as, to parch the skin; to parch corn.
Ye shall eat neither bread, nor parched corn. — Lev. xxiii. 14
2.
To dry to extremity; to shrivel with heat; as, the mouth is parched from fever.
The ground below is parched. — Dryden

Parch , intransitive verb

To become scorched or superficially burnt; to be very dry.
Parch in Afric sun. — Shakespeare