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Verb: hole up
  1. Remain secluded or in hiding
    "He is writing his book and is holing up in his study"
  2. (golf) score a hole in one
  3. Sleep during winter
    "Bears must eat a lot of food before they hole up in their caves";
    - hibernate

Derived forms: holed up, holing up, holes up

Type of: catch some Z's [N. Amer, informal], hide, hide out, hit, rack up, score, sleep, slumber, tally