drench

Concise Oxford English Dictionary © 2008 Oxford University Press:
drench/drentʃ/

▶verb

• 1 wet thoroughly; soak.

  ■ (often as adj. drenched) cover liberally with something: a sun-drenched clearing.

• 2 forcibly administer a liquid medicine to (an animal).

▶noun a dose of medicine administered to an animal.

■ archaic a draught of medicine or poison.

– origin OE drencan ‘force to drink’, drenc ‘a drink or draught’, of Gmc origin; rel. to drink.