reference to a work of literature in another work of literature.
A reference to something famous. A play, song, opera, ect. EXAMPLE:an allusion to Shakespeare.
1. Classical (Greek/Latin culture and mythology) 2. Biblical3. Literary4. Historical
allusions are used when the author wants to make a connection to the outside world, to help people understand the reading better,
One of the allusions refers to King Neptune, ruler of the seas. "Will all great Neptune's ocean wash this blood clean from my hand?" (Act 2, Scene 2)