pintail

noun

Etymology: From pin + tail.

1. A pintail duck, a type of dabbling duck with a characteristic pointed tail.
2. A pintail duck, a type of dabbling duck with a characteristic pointed tail.
3. A pin-tailed snipe, Gallinago stenura.
4. Any of various species of libellulid dragonfly of the genus Acisoma, endemic to Africa and Asia.
5. The end of a fastening pin or mandrel on a Huckbolt or pop rivet that is broken off when installation is complete.

   “The collar is placed over the fastener pintail and the installation tool is placed over the pintail. The tool pulls on the pin drawing the parts together until the collar is swaged into locking grooves.”

6. A surfboard with a pointed back end.