line-throwing gun
nounUK /ˈlaɪnˌθrəʊɪŋ ɡʌn/
US /ˈlaɪnˌθroʊɪŋ ɡʌn/
A tool that shoots a rope far away to help people.
The rescue team used a line-throwing gun to send a rope to the boat.
OTHER MEANINGS
2. A device used on ships to throw a line to shore or another vessel.
The sailor fired the line-throwing gun toward the dock.
3. A tool used by firefighters to send a rope to a high place.
Firefighters used a line-throwing gun to reach the window.
4. A small cannon-like device that launches a light rope for rescue work.
The coast guard keeps a line-throwing gun on every boat.