COLLAPSE (2)

collapse (2). Collapse, n. a closing, as the sides of a blood vessel

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Col‐lapse″ (?), n. 1. 1. A falling together suddenly, as of the sides of a hollow vessel.
2. 2. A sudden and complete failure; an utter failure of any kind; a breakdown.
3. 3. (Med.) Extreme depression or sudden failing of all the vital powers, as the result of disease, injury, or nervous disturbance.