D defs.my
Entry 2 senses Webster, 1913

Mobility

/(mō̇*bĭl"ĭ*ty̆)/ · Mo·bil·i·ty · IPA /moʊˈbɪlɪti/
01 n. The quality or state of being mobile; as, the mobility of a liquid, of an army, of the populace, of features, of a muscle.
  1. 1.
    The quality or state of being mobile; as, the mobility of a liquid, of an army, of the populace, of features, of a muscle.
  2. 2.
    The mob; the lower classes.[Humorous]