Capper and Maximum

• (n.) One whose business is to make or sell caps.
• (n.) An instrument for applying a percussion cap to a gun or cartridge.
• (n.) A by-bidder; a decoy for gamblers [Slang, U. S.].

noun

• The largest possible quantity.
  • synonyms: upper limit
• The greatest possible degree.
  • usage: "he tried his utmost"
  • synonyms: utmost, uttermost, level best
• The point on a curve where the tangent changes from positive on the left to negative on the right.

adjective

• The greatest or most complete or best possible.
  • usage: "maximal expansion"; "maximum pressure"
  • synonyms: maximal

• (n.) The greatest quantity or value attainable in a given case; or, the greatest value attained by a quantity which first increases and then begins to decrease; the highest point or degree; -- opposed to minimum.
• (a.) Greatest in quantity or highest in degree attainable or attained; as, a maximum consumption of fuel; maximum pressure; maximum heat.