leech - definition and synonyms

noun [countable] 

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  1. 1
    a small soft creature that sticks to the skin of other animals in order to feed on their blood. Leeches were often used in the past as a type of medical treatment.
     Synonyms and related words
     Synonyms and related words
  2. 2
    someone who tries to get money, food, or other benefits from someone else