From The Collaborative International Dictionary of English v.0.48:
Cap \Cap\, v. t. [imp. & p. p. Capped; p. pr. & vb. n.
Capping.]
1. To cover with a cap, or as with a cap; to provide with a
cap or cover; to cover the top or end of; to place a cap
upon the proper part of; as, to cap a post; to cap a gun.
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The bones next the joint are capped with a smooth
cartilaginous substance. --Derham.
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2. To deprive of cap. [Obs.] --Spenser.
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3. To complete; to crown; to bring to the highest point or
consummation; as, to cap the climax of absurdity.
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4. To salute by removing the cap. [Slang. Eng.]
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Tom . . . capped the proctor with the profoundest of
bows. --Thackeray.
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5. To match; to mate in contest; to furnish a complement to;
as, to cap text; to cap proverbs. --Shak.
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Now I have him under girdle I'll cap verses with him
to the end of the chapter. --Dryden.
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Note: In capping verses, when one quotes a verse another must
cap it by quoting one beginning with the last letter of
the first letter, or with the first letter of the last
word, or ending with a rhyming word, or by applying any
other arbitrary rule may be agreed upon.
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