Meanings
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1
noun
A person who works at a high level in a bank, especially managing money or investments.
Her father is a banker at a major investment firm.
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2
noun
The person who runs the bank in a gambling game.
The banker dealt the cards to each player at the table.
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3
noun
Something almost certain to succeed; a very safe choice.
Everyone thought the new manager was a banker, the one signing that couldn't fail.
Thesaurus
Etymology
From bank (“an elevation, or rising ground”) + -er (relational noun suffix) or + -er (occupational suffix).