drive point

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well point

A hollow rod with a perforated intake at its lower end, which is pointed; driven into the ground and connected to a pump, to remove water at an excavation site.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
His style is light-hearted, and uses the benefits of humor to drive points home.
The book is purposely written in simple language that is easy to understand and features color illustrations and bulleted lists to further drive points home.
As part of the process, Matthew breaks cigarettes in half every time a myth is exploded and uses props like medicine bottles and tablets to drive points home.