Definition of "cap" []

• A usually soft and close-fitting head covering, either having no brim or with a visor. (noun)
• A special head covering worn to indicate rank, occupation, or membership in a particular group: a cardinal's cap; a sailor's cap. (noun)
• An academic mortarboard. Used especially in the phrase cap and gown. (noun)
• A protective cover or seal, especially one that closes off an end or a tip: a bottle cap; a 35-millimeter lens cap. (noun)
• A crown for covering or sealing a tooth. (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.

• "[_He takes off his cap and puts on a woolen cap_.]"
• "*applies latex swim cap to hold skull togedder, then CHRG wdoi ober the swim cap*"
• "A single multivitamin cap is just not potent enough to provide serious immune support, no matter what the company tells you."