Definition of "allusion"
allusion
noun
countable and uncountable, plural allusions
An indirect reference; a hint; a reference to something supposed to be known, but not explicitly mentioned.
Quotations
I remember, before the Dwarf left the Queen, he followed us one day into thoſe gardens, and my Nurſe having ſet me down, he and I being cloſe together, near ſome Dwarf Apple trees, I muſt need ſhew my Wit, by a ſilly Alluſion between him and the Trees, which happens to hold in their Language as it doth in ours.
1726 October 28, [Jonathan Swift], Travels into Several Remote Nations of the World. […] [Gulliver’s Travels], volume I, London: […] Benj[amin] Motte, […], part I (A Voyage to Lilliput), pages 226–227
We draw the conclusion then, that the very reason why the multitude, or the world, as they were designated by the Savior, did not receive an explanation upon his parables, was, because of unbelief. To you, he says, (speaking to his disciples) it is given to know the mysteries of the kingdom of God: and why? because of the faith and confidence which they had in him. This parable was spoken to demonstrate the effects that are produced by the preaching of the word; and we believe that it has an allusion directly, to the commencement, or the setting up of the kingdom in that age […]
1835, Joseph Smith, Jr., Latter Day Saints' Messenger and Advocate