Definition of allusion noun from the Oxford Advanced American Dictionary

 

allusion

 noun
noun
NAmE//əˈluʒn//
 
[countable, uncountable]allusion (to somebody/something)
 
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something that is said or written that refers to or mentions another person or subject in an indirect way (= alludes to it) His statement was seen as an allusion to the recent political unrest. Her poetry is full of obscure literary allusion.
See the Oxford Advanced Learner's Dictionary entry: allusion