noun - a person who guards prisoners
adverb - done privately, without other people knowing
noun - a medicine that helps prevent blood clots and makes the blood flow more easily
noun - a medicine that calms you down or makes you sleepy
noun - a liquid medicine in a spray form for sore throats
noun - a kind of medicine that kills microorganisms and is used to treat bacterial infections etc.
noun - a vehicle that moves down an icy track at great speed; a winter sport in which teams race down an ice-covered track in a small, streamlined vehicle with runners
noun, American English - a vehicle that moves down an icy track at great speed; a winter sport in which teams race down an ice-covered track in a small, streamlined vehicle with runners
verb - to jump out of an aircraft using a parachute, usually in an emergency