Mil (noun)

1. A unit of measurement of thickness or distance equal to one thousandth of an inch (0.001 inches). 2. A unit of measurement of angle equal to one thousandth of a radian (0.001 radians).

Origin:

From the latin word millesimum, meaning "thousandth".

Examples:

1. The coating on the wire is measured in mils.
2. The target was sighted at a range of 100 mils.
3. The thickness of the foil is measured in mils.
4. The tolerance of the part is within 2 mils.
5. The angle of the radar beam is measured in mils.