Source : Webster's Revised Unabridged Dictionary (1913)

Graal \Graal\, n.
   See Grail., a dish.

Source : Free On-Line Dictionary of Computing

GRAAL
     
        ("Grail") General Recursive Applicative and Algorithmic
        Language.  FP with polyadic combinators.  "Graal: A Functional
        Programming System with Uncurryfied Combinators and its
        Reduction Machine", P. Bellot in ESOP 86, G. Goos ed, LNCS
        213, Springer 1986.