high-pressure

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Of or relating to pressures higher than normal, especially higher than atmospheric pressure.
• adjective Using aggressive, persistent persuasive tactics.
• adjective Full of or imposing great stress or tension.
• transitive verb To attempt to sell (something) or persuade (someone) by using aggressive, persistent tactics.

from The Century Dictionary.

• Noting an engine which exhausts at atmospheric pressure as distinguished from a condensing-engine; hence, non-condensing. This use of the term is confusing and inadvisable.
• Having a high rate of steam-pressure: as, a high-pressure engine. See high pressure, under pressure.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Having or involving a pressure greatly exceeding that of the atmosphere; -- said of steam, air, water, etc., and of steam, air, or hydraulic engines, water wheels, etc.
• adjective Fig.: Urgent; intense.
• adjective Using intense psychological pressure or other incentives to convince others to do things; aggressively persistent.
• adjective an engine in which steam at high pressure is used. It may be either a condensing or a noncondensing engine. Formerly the term was used only of the latter. See Steam engine.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Operating with high pressures, such as several times atmospheric pressure but relative.
• adjective Tense, stressful.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective aggressively and persistently persuasive