Allusion - indirect reference
Allusion is a reference to a place, person or event that suggests indirectly what the writer is saying.
The statement “He was as strong as Hercules” is an example of allusion – in this case, an indirect reference to a man’s strength.
A loo shone (allusion) after it was cleaned up by Hercules (indirect reference example – Hercules as in “He had Herculean strength” is an allusion).
She’s a real Jekyll and Hyde character.
I’m surprised his nose was not growing like Pinocchio’s. (The allusion to Pinocchio’s nose growing suggests that the person was lying).