1. To crouch or curl up; SYN. cower.
2. To crowd or draw together; SYN. huddle together.

1. To make and occupy a nest; to nest.
2. To lie close and snug, as a bird in her nest; to cuddle up; to settle, as in a nest; to harbor; to take shelter.
3. To move about in one's place, like a bird when shaping the interior of her nest or a young bird getting close to the parent