beta blocker | (n) any of various drugs used in treating hypertension or arrhythmia; decreases force and rate of heart contractions by blocking beta-adrenergic receptors of the autonomic nervous system, Syn. beta-adrenergic blocking agent, beta-adrenergic blocker, beta-blocking agent |
beta blocker eyedrop | (n) a treatment for glaucoma; the eyedrops reduce intraocular pressure by reducing the production of aqueous humor |