WordNet (r) 3.0 (2006):

labetalol
    n 1: antihypertensive drug (trade names Trandate and Normodyne)
         that blocks alpha and beta-adrenergic receptors of the
         sympathetic nervous system (leading to a decrease in blood
         pressure) [syn: labetalol, labetalol hydrochloride,
         Trandate, Normodyne]