Source : Webster's Revised Unabridged Dictionary (1913)

Attentate \At*ten"tate\, Attentat \At*ten"tat\, n. [L.
   attentatum, pl. attentata, fr. attentare to attempt: cf. F.
   attentat criminal attempt. See {Attempt}.]
   1. An attempt; an assault. [Obs.] --Bacon.

   2. (Law)
      (a) A proceeding in a court of judicature, after an
          inhibition is decreed.
      (b) Any step wrongly innovated or attempted in a suit by
          an inferior judge.