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Meaning of hospital corner

hos'pital cor"ner

Pronunciation: [key]
  1. a fold on a bed sheet or blanket made by tucking the foot or head of the sheet straight under the mattress with the ends protruding and then making a diagonal fold at the side corner of the sheet and tucking this under to produce a triangular corner.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.