Definition of pile (something) on
1 : to put a large amount of (something) on something or someone He piled on the gravy. The teacher punished the class by piling on more homework. Her parents piled on the pressure to do well in school.
2 : to gained a lot of something He piled on the pounds after he got married.
Love words? Need even more definitions?Merriam-Webster unabridged
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