1) Occlusion 
In medicine, laryngospasm is an uncontrolled/involuntary muscular contraction (spasm) of the laryngeal cords. The condition typically lasts less than 60 seconds, and causes a partial blocking of breathing in, while breathing out remains easier. It may be triggered when the vocal cords or the area of the trachea below the cords detects the entry of...
The sudden acute spasm of the vocal cords (and epiglottis) that can result in occlusion of the airway and death. ... (27 Sep 1997) ... 
(lә-ring´go-spaz″әm) spasmodic closure of the larynx; called also laryngismus, glottic spasm, and laryngeal spasm.
Type: Term Pronunciation: lă-ring′gō-spazm Definitions: 1. Reflex closure of the glottic aperture. Synonyms: glottidospasm, laryngospastic reflex
[n] - a closure of the larynx that blocks the passage of air to the lungs
laryngospasm 1. A closure of the larynx that blocks the passage of air to the lungs. 2. The sudden acute spasm of the vocal cords (and epiglottis) that can result in occlusion, or closing, of the airway and in death.glottidospasm, laryngospasm Spasmodic closure of the glottic aperture.
an uncontrolled muscular contraction of the vocal cords that causes a partial blocking of breathing in. Laryngospasm is also a body’s response to prevent water from entering the lungs when drowning.
noun a closure of the larynx that blocks the passage of air to the lungs