cowl

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cowl

1. the part of a car body that supports the windscreen and the bonnet
2. Aeronautics another word for cowling
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

Cowl

A metal cover fitted with louvers, often capable of rotating, fixed on a roof ventilator or chimney to improve the natural ventilation or draft.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

cowl

A protective hood on a vertical pipe (such as a soil stack or vent pipe); used to exclude rain-water and snow.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

cowl

A covering surrounding the whole, or part, of an engine or a power unit installed on the aircraft. It is either hinged or other-wise removable. Cowls minimize drag and help cool the engine.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
"A deeper understanding of these evolutionary adaptations in bats may lead to better treatments for human diseases, and may eventually enable us to predict or perhaps even prevent outbreaks of emerging bat viruses," Cowled said.
"What we found intriguing was that some of these genes also have secondary roles in the immune system," Dr Cowled said.
Conversely, a large-displacement engine (i.e., one that necessarily generates relatively large amounts of heat in exchange for its greater fuel use) may overheat even at high airspeeds if we ask too much from a poorly cowled example.
Keeping your cool: it's likely your airplane's engine is air-cooled, which is a simple, reliable system, but one also requiring awareness and management

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