RhymeZone: swifter definitions

Definitions of swifter:

noun: (nautical) A rope used to retain the bars of the capstan in their sockets while it is being turned.
noun: (nautical) A rope used to encircle a boat longitudinally, to strengthen and defend her sides.
noun: (nautical) The forward shroud of a lower mast.
verb: (nautical, transitive) To tighten (e.g. slack standing rigging) by bringing the opposite shrouds nearer.

(Definitions from Wiktionary)