What is to bind, fasten, or tie with a rope or cord; as, to rope a bale of goods. Hence: -- 2. To connect or fasten together, as a party of mountain climbers, with a rope called?

rope — To bind, fasten, or tie with a rope or cord; as, to rope a bale of goods. Hence: -- 2. To connect or fasten together, as a party of mountain climbers, with a rope. (Webster's 1913.)

Sources