COLLAPSE v. 2 definitions
To fall together suddenly, as the sides of a hollow vessel; to close by falling or shrinking together; to have the sides or parts of (a thing) fall in together, or be crushed in together; as, a flue in the boiler of a steam engine sometimes collapses. A balloon collapses when the gas escapes from it. Maunder.…
COLLAR n.
a shaft. Raymond. Collar beam (Arch.), a horizontal piece of timber connecting and tying together two opposite rafters; -- also, called simply collar. -- Collar of brawn, the quantity of brawn bound up in one parcel. [Eng.] Johnson. -- Collar day, a day of great ceremony at the English court, when persons, who are d…