(n.) A measure of length; the thousandth part of one millimeter; the millionth part of a meter.

A G M a angstrom unit astronomical unit block centimeter chain chiliad chiliagon chiliahedron chiliarch chiliarchia cubit decameter decimeter dekameter ell em en fathom finger foot footstep fur furlong grand hand inch kilo kilocycle kilogram kilohertz kiloliter lakh league light-year line link meter micron mil mile millennium millepede milligram milliliter myriad myriameter nail one hundred thousand pace palm parsec perch pica point pole rod step stride ten thousand thou thousand wavelength yard