Wiktionary
tucks in
vb. (en-third-person singulartuck in)
Usage examples of "tucks in".
She tucks in the sheets, crouching at the corners, and listens for sounds of Sexton below, her heart beating so erratically that she has to put a hand to her chest.
He tucks in his shirttails and sets his hat on his head at an angle.
He plugs the microphone into a speaker port and tucks in the earpiece.
Also some Tucks in a screw-top jar just to keep everything tidy after the mail has gone through, be it just an advertising circular or two addressed to OCCUPANT or a big old special-delivery package.