FOOT FAULT SIGNAL.The line judge needs to watch for the server stepping on the end line when serving. If the server steps on the line, the line judge will waive the flag and point to the line to signal to the referee. IMPOSSIBLE JUDGEMENT.The line judge will signal "impossible judgement"...
coax, coax cable, coaxial cable - a transmission line for high-frequency signals conductor - a device designed to transmit electricity, heat, etc. electrical cable - a cable that provides an electrical connection for telephone or television or power stations fiber optic cable, fibre optic cable ...