metaproterenol: a bronchodilator (trade name Alupent) used to treat asthma and emphysema and other lung conditions; available in oral or inhalant forms; side effects include tachycardia and shakiness
bronchodilator: a drug that relaxes and dilates the bronchial passageways and improves the passages of air into the lungs
spectacles: optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision