gad

noun

1
a sharp prod fixed to a rider's heel and used to urge a horse onward
cowboys know not to squat with their spurs on
2
an anxiety disorder characterized by chronic free-floating anxiety and such symptoms as tension or sweating or trembling or lightheadedness or irritability etc that has lasted for more than six months
cowboys know not to squat with their spurs on

Also useful for “gad”:Unscrambler— Turn loose letters into real words