1. to lie close or curled up, as for warmth or affection.
example: The puppies nestled near their mother.
2. to lie or be situated in a sheltered location or refuge.
example: They lived in a small cabin that nestled in the woods.
to place or press snugly or affectionately.
example: The child nestled her head against her mother’s shoulder.
nest lIng or ne slIng
a young bird still confined to the nest. (Cf. fledgling.)
Barn Swallow nestling Kati Fleming: Wikipedia