a substance, e.g. ointment, which takes away pain

pain remover

the thin, colourless liquid (formula CHCl3) formerly given to make a person unconscious during a surgical operation

toxic substance

of hypnosis

spellbinding, sleep-inducing

the science of the prevention and cure of disease

cure

(of) a drug which produces sleep or reduces pain and is dangerous if taken in large quantities; (of) a person addicted to narcotics

dulling, painkilling

(a substance, drink etc) producing sleep

sleepy; sleep-inducing