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To make a hole in or through, with or as if with a drill.
(verb-transitive)
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To form (a tunnel, for example) by drilling, digging, or burrowing.
(verb-transitive)
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To make a hole in or through something with or as if with a drill: "three types of protein that enable the cells to bore in and out of blood vessels” ( Elisabeth Rosenthal).
(verb-intransitive)
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To proceed or advance steadily or laboriously: a destroyer boring through heavy seas.
(verb-intransitive)
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A hole or passage made by or as if by use of a drill.
(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.