1. : one who gambles or speculates with small amounts of money. 2. : one who does things in a small way. also : tightwad, cheapskate. Synonyms. cheapskate. churl. hunks. miser. niggard. penny-pincher. scrooge. skinflint. tightwad. See all Synonyms & Antonyms in Thesaurus. Examples of piker in a Sentence. More @Wikipedia
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