I. adjective
Date: 1824
1.
a. : having or involving a high or comparatively high pressure especially greatly exceeding that of the atmosphere
b. : having a high barometric pressure
2.
a. : using or involving aggressive and insistent sales techniques
b. : imposing or involving severe strain or tension
high-pressure occupations
II. transitive verb
Date: 1926
: to sell or influence by high-pressure tactics