/
geɪdʒ/
n.
    - an instrument that measures and gives a visual display of the amount, level, or contents of something.
 - the thickness, size, or capacity of a wire, sheet, tube, bullet, etc., especially as a standard measure.
 - the distance between the rails of a line of railway track.
 - Nautical,  archaic the position of a sailing vessel to windward (the weather gage) or leeward (the lee gage) of another.
 
v.
  - estimate or determine the amount or level of. 
▸judge or assess (a situation, mood, etc.).
 - measure the dimensions of with a gauge. 
▸
[as adj. gauged]
 made in standard dimensions.
 
Derivative
Etymology
ME: from OFr. gauge (n.), gauger (v.), var. of Old North. Fr. jauge, jauger, of unknown origin.