first water


noun

(formerly) the highest degree of fineness in a diamond or other precious stone. Compare water(def 13).
the finest quality; highest rank.

Origin of first water

First recorded in 1745–55

Example sentences from the Web for first water

  • Yet they were constantly after him, for they knew they were likely to get a first-water gem.

  • An expert would have known immediately that it was a first-water product of an expert gunsmith.

    The Black Wolf Pack |Dan Beard
  • She was got up expensive, all real lace and first-water sparks, and just as handsome as a towel rack.

    Shorty McCabe |Sewell Ford

British Dictionary definitions for first water

first water

noun

the finest quality of diamond or other precious stone
the highest grade or best quality
the most extreme kind a fool of the first water