alleycat

alleycat (plural alleycats)

1. Alternative form of alley cat
   • 2012 June 29, Kevin Mitchell, “Roger Federer back from Wimbledon 2012 brink to beat Julien Benneteau”, in The Guardian‎, archived from the original on 15 November 2016:

     Having dropped just nine games in two matches – two short of Jimmy Connors's 1980 record – [Roger] Federer was reduced to fighting like an alleycat.

2. An informal bicycle race with checkpoints.
   • 2008 March 9, Colin Moynihan, “Add Alleycat Races to List of Bike Messengers’ Risks”, in New York Times‎:

     There are also competitions called alleycats, in which bicyclists pick their own routes between a series of checkpoints where monitors stamp their paper manifests.