tailer

noun4

1. •
   One who follows or tails surreptitiously, as an investigator.

   • When the car entered the traffic circle I followed after it, the tailed now tailing the tailer. The car's occupants, sure now that they'd been spotted, sped off ahead of me along Dodgers Hole Road. — 2003
2. •
   A large noose with a long handle intended to secure a fish's tail.
3. •
   A worker on a yacht, responsible for furling and setting the sails.

   • The next step was the invention of the self-tailing device, whereby the need for a tailer, holding the sheet or halyard while another person operated the winch, was eliminated. — 2000
4. •
   A fish bottom-feeding in shallow water with its tail out of the water.