Wordnet 3.0
NOUN (1)
1. 
 a Greek epic poem (attributed to Homer) describing the siege of Troy; 
The Collaborative International Dictionary of English v.0.48:
Iliad \Il"i*ad\, n. [L. Ilias, -adis, Gr. ?, ? (sc. ?), fr. ?,
   ?, Ilium, the city of Ilus, a son of Tros, founder of Ilium,
   which is a poetical name of Troy.]
   A celebrated Greek epic poem, in twenty-four books, on the
   destruction of Ilium, the ancient Troy. The Iliad is ascribed
   to Homer.
   [1913 Webster]
WordNet (r) 3.0 (2006):
Iliad
    n 1: a Greek epic poem (attributed to Homer) describing the
         siege of Troy
The Free On-line Dictionary of Computing (30 December 2018):
ILIAD
    A real-time language.
   ["On the Design of a Language for Programming Real-Time
   Concurrent Processes", H.A. Schutz, IEEE Trans Soft Eng
   SE-5(3):248-255, May 1979].
   (2000-09-03)