An act of striking the ground with the leading foot to frighten, distract, or mislead one's opponent.
"The boxer feinted a punch and then executed an appel on his rival's lead leg before delivering a powerful counter-hit."
Obsolete spelling of appeal
"The archivist marked the manuscript's odd usage of appel as an obsolete spelling of appeal before filing it away in the history section."
A surname.
"The Appel family has lived in our neighborhood for three generations."
This word comes from the French appel. It is a doublet of the English word appeal, meaning they share the same origin but developed differently.