n.
- a tool or implement, especially for precision work.
- a measuring device, especially in a vehicle or aircraft.
-
(also musical instrument)
a device for producing musical sounds.
- a means of pursuing an aim.
- a person who is made use of.
- a formal or legal document.
v.
equip with measuring instruments.
Etymology
ME: from OFr., or from L. instrumentum ‘equipment, implement’, from instruere ‘construct, equip’.