This meaning refers to placing an edge, loose part, or object neatly inside or under something.
Tuck your shirt into your trousers.
She tucked the blanket around the baby.
Usually used as tuck in, this meaning refers to arranging covers and helping someone settle for sleep.
She tucked the children into bed.
He tucked his daughter in and turned off the light.
This informal meaning refers to beginning to eat with enthusiasm or consuming a large amount.
The children tucked into the meal.
He tucked away two large sandwiches.
