'Pressure cooker' definitions:

Definition of 'pressure cooker'

(from WordNet)
noun
Autoclave for cooking at temperatures above the boiling point of water

Definition of 'Pressure cooker'

From: GCIDE
  • Pressure cooker \Pressure cooker\
  • 1. (Cookery) a pot with a lid which may be tightly bound to the bottom part, forming a vessel which can withstand some gas pressure from within. It is used to heat foods in water or steam to a temperature somewhat above the boiling point of water, allowing the cooking process to be accomplished more quickly than otherwise. [PJC]
  • 2. Fig., a situation involving intense psychological pressure due to multiple urgent demands, as in certain job situations. [PJC]