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Anatomy Of or relating to a delicate membrane enclosing the spinal cord and brain.
(adjective)
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Of, relating to, or resembling arachnids.
(adjective)
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Covered with or consisting of thin, soft, entangled hairs or fibers resembling those of a cobweb or spider's web.
(adjective)
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See arachnid.
(noun)
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Anatomy A delicate membrane that encloses the spinal cord and brain and lies between the pia mater and dura mater.
(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.