Main Entry: bron·cho·spasm Pronunciation: 'brä[ng]-k&-"spaz-&m Function: noun : constriction of the air passages of the lung (asin asthma) by spasmodic contraction of the bronchial muscles —bron·cho·spas·tic/"brä[ng]-k&-'spas-tik/adjective
bronchospasm bron·cho·spasm (brŏng'kə-spāz'əm) n. A contraction of smooth muscle in the walls of the bronchi and bronchioles, causing narrowing of the lumen.