interswitchboard line /in-tər-swichˈbōrd or -börd līn/ (telecommunications)

• coaching
• coaching inn
• coaching inns
• coachings
• coachline
• coachlines
• coachload
• coachloads
• coachman
• coachmen
• coach-office
• coach-offices
• coach parties
• coach party
• coach road
• coach roads
• coach screw
• coach screws
• coach-stand
• coach-stands
• coach tour
• coach tours
• coach-way
• coach-ways
• coach-wheel