Roper (noun)

1. One who ropes or captures, as in a cowboy who ropes cattle.
2. A machine or device used for roping or capturing something.

Origin:

From middle english "ropere" meaning "one who ropes".

Examples:

1. The roper was able to catch the calf in one swift move.
2. The roper's skill with a lasso was legendary.
3. The roper was a vital member of the cattle drive team.
4. The roper machine was used to lift heavy loads.
5. The roper was able to secure the boat to the dock with a rope.