A close-fitting hat, either brimless or peaked. / A special hat to indicate rank, occupation, etc. / An academic mortarboard. / A protective cover or seal. / A crown for covering a tooth.

(slang) A capsule of a drug.

(obsolete) A wooden drinking-bowl with two handles.

capillary

(transitive) To take a screenshot or to record a copy of a video.

(colloquial) A capitalist.

(transitive) To cover or seal with a cap. / (transitive) To award a cap as a mark of distinction. / (transitive) To lie over or on top of something. / (transitive) To surpass or outdo.

(transitive, informal) To convert text to uppercase.

(informal) An uppercase or capital letter.

(finance) Capitalization.