扎 (zhā) means “to prick; to run or stick (a needle etc) into; mug or jug used for serving beer (loanword from "jar")”. It is an HSK 6 Chinese character in the HSK 3.0 vocabulary.
护士给他扎了一针。
Hùshi gěi tā zhā le yī zhēn.
The nurse gave him an injection.
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