Related Clues:

• Settled down
• Fit together
• Fit snugly one inside another
• Made a home in a tree
• Embedded, in a way
• Settled in
• Got comfy
• Like Matryoshka dolls
• Like some Russian dolls
• Fit one inside another
• Like Russian dolls
• Fit one within another
• Like some boxes
• Fit snugly inside
• Fitted within one another