wiper

Etymology 1

wipe + -er

noun

1. Someone who wipes.
   So, Willy, let you and me be wipers / Of scores out with all men — especially pipers! 1842, Robert Browning, “The Pied Piper of Hamelin”, in Dramatic Lyrics
2. Something, such as a towel, that is used for wiping.
3. Something, such as a windscreen wiper, that is designed for wiping.
4. A movable electric contact in some devices.
5. (nautical) A junior role in the engine room of a ship, someone who wipes down machinery and generally keeps it clean.

Etymology 2

From white (bass) and striper.

noun

1. A hybrid fish variety artificially bred from eggs of striped bass (Morone saxatilis) fertilized with white bass (Morone chrysops) sperm, or the opposite combination.
   As is the customary method for catching wipers at Keith Sebelius Reservoir, the trio was trolling with crank baits. 1983, Kansas Fish, Game Commission, “Fishing”, in Kansas Wildlife, page 16
   M. saxatilis X M. chrysops hybrids (wipers) are difficult to distinguish, showing intermediacy from parental types in basihyal tooth formation January 23, 2013, Texas State University San Marcos Department of Biology, “Morone saxatilis”, in Texas Freshwater Fishes
   With good reason, wipers are among the most stocked hybrid gamefish in the United States. They won’t rival actual stripers for overall size, but wiper find a happy medium between the revered striper and the much smaller, pesky white bass. April 23, 2021, Stephen Klobucar, “The history and mystery of hybrid fishes”, in Meat Eater