helpfulinstrument
nounUK /ˈhelpfʊl ˈɪnstrəmənt/
US /ˈhelpfəl ˈɪnstrəmənt/
A helpful instrument is a tool that makes a job easier to do.
The little shovel was a helpful instrument for planting the seeds.
OTHER MEANINGS
2. A person or thing that assists in getting something done.
Her calm voice was a helpful instrument in solving the argument.
3. A musical instrument that is easy and pleasant to play.
The recorder is a helpful instrument for young beginners.
4. A piece of equipment used to measure or fix things.
The ruler is a helpful instrument for drawing straight lines.