Jisho

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Noun
1. shutting oneself in (one's room, etc.)
Noun
2. barricading oneself in (a fort, etc.) while being besieged; holing up (in a building)
Other forms
立て篭り 【たてこもり】立て籠り 【たてこもり】楯籠り 【たてこもり】

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