1. forming a loop with a running knot that tightens when pulled
2. catching or trapping with a noose

Examples

• The cowboy was noosing the rope to catch the runaway calf.
• She practiced noosing the lasso until she could do it quickly.
• The rancher spent the morning noosing cattle that had wandered off.
• He was noosing the cord to secure the bundle.
• The hunter was noosing wire to make animal traps.
• They were noosing ropes around the posts to mark the boundary.