All 5 Uses

allude
in
The Power and the Glory, by Cooke
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Consadine's a poor provider," she said plaintively, alluding to her absent husband.†
Chpt 1

alluding = making an indirect reference
"Was that what you were doing," she asked, alluding to some small item of the operating, "when you stopped by the side of the road, Sunday night, when Miss Lydia was with you?"†
Chpt 7
A "concrete form" she imagined might allude to the fact that Miss Sessions had a better figure than she.†
Chpt 8 *

allude = to make an indirect reference
I was not alluding to social classes.†
Chpt 9

alluding = making an indirect reference
Individuals who work in cotton mills, and are not adults, are never alluded to as children.†
Chpt 15

alluded = indirectly referenced

Definitions:

(1) (allude)
to make an indirect reference

The expression, no allusion can mean "not even an indirect reference"; i.e., neither a direct nor an indirect reference to something.
(2) (meaning too rare to warrant focus)