instrument

noun
A2
OPAL
1
A2
an object used for producing musical sounds, for example a piano or a drum
ساز, آلت موسیقی
see also stringed instrument, wind instrument
2
B2
a tool or device used for a particular task, especially for specialist or scientific work
ابزار, وسیله, آلت, ابزار دقیق
surgical/optical/scientific instruments
Scientists then began using powerful instruments to peer through the planet's dense atmosphere.
syringes, needles or other sharp instruments
medieval instruments of torture such as the rack and the wheel
Instruments for diagnosis and surgery have become hugely more sophisticated.
the world's most powerful instrument for detecting gamma rays
see also blunt instrument(1)
3
B2
a device used for measuring speed, distance, temperature, etc. in a vehicle or on a machine
ابزار, دستگاه, وسیله, سنج‌آور, اندازه‌گیر
data gathered by instruments aboard the satellite
the flight instruments
There was a warning light flashing on the instrument panel.
4
something that is used by somebody in order to achieve something; a person or thing that makes something happen
ابزار, وسیله, آلت
The law is not the best instrument for dealing with family matters.
an instrument of change
see also blunt instrument(2)
5
a person who is used and controlled by somebody/something that is more powerful
آلت
an instrument of fate
The despot claimed to be the chosen instrument of divine providence.
6
a formal legal document
سند قانونی
credit instruments issued by banks
see also statutory instrument