1. Noun

   nest (of boxes); nesting

2. concealed information

3. nested structure

   Computingsee ネスティング

4. adopting a child after one's own has died; child adopted by a parent of a deceased child

   Dated term

5. cavity in an oar (fitted onto a peg as part of a traditional oarlock)

   see 櫓杭

Also written 入れ籠【いれこ】ireko