non-smoking adjective 2noun 1 adjective2 •Having restrictions on smoking.We want a table in the non-smoking section. •Using no tobacco products.We have a room for a non-smoking tenant. noun1 •The act of abstaining from smoking; a policy of doing so.Yes, your Honor: non-smoking has been our policy in all of our hotel rooms for at least twenty years, and Mr Jones clearly knew that.Regular exercise, a healthy diet, moderation of alcohol use, non-smoking, and annual checkups can all reduce the risk of atherosclerotic cardiovascular disease.