1. (n.) A grating of iron or of timbers pointed with iron, hung over the gateway of a fortress, to be let down to prevent the entrance of an enemy.

2. (n.) An English coin of the reign of Elizabeth, struck for the use of the East India Company; -- so called from its bearing the figure of a portcullis on the reverse.

3. (v. t.) To obstruct with, or as with, a portcullis; to shut; to bar.

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