swifter /ˈswɪftəɹ/noun 3verb 1forms 3 noun3 •A rope used to retain the bars of the capstan in their sockets while it is being turned. •A rope used to encircle a boat longitudinally, to strengthen and defend her sides. •The forward shroud of a lower mast. verb1 •To tighten (e.g. slack standing rigging) by bringing the opposite shrouds nearer. formsswiftered · swiftering · swifters