Source : Webster's Revised Unabridged Dictionary (1913)

Jet d'eau \Jet` d'eau"\, pl. {Jets d'eau}. [F., a throw of
   water. See {Jet} a shooting forth.]
   A stream of water spouting from a fountain or pipe
   (especially from one arranged to throw water upward), in a
   public place or in a garden, for ornament.

Jet d'eau \Jet` d'eau"\; pl. {Jets d'eau}. [F., a throw of
   water.]
   A stream of water spouting, esp. upward, from a fountain or
   pipe for ornament; also, the fountain or pipe from which it
   issues.