rain napper

plural rain nappers

1. UKobsoleteslangAn umbrella.

   “Tonight I would trade every fancy racer for a hansom nag, or even for a rain napper.”

   2015, Laurie R. King, In the Company of Sherlock Holmes

   2 more examples

   Within a few minutes, Mr. Fair, who was also the Sheriff, came into the building while closing his rain napper.

   2010, Ann DeWitt, Kevin M. Weeks, Entangled in Freedom: A Civil War Story, page 17

   “Glad to hear it,” he said. “Shoulda taken a rain napper, though. You're wet through.”

   2016, Matthew J. Kirby, A Taste for Monsters