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Verb: tuck into
  1. Eat or drink heartily
    "My son tucked into a whole pizza";
    - tuck in, tuck away, put away
     
  2. [informal] Begin working on or dealing with something enthusiastically
    "She tucked into her homework with determination";
    - tuck in [informal]

Derived forms: tucked into, tucks into, tucking into

Type of: eat up, finish, polish off [informal]