The chuck holds the drill bit in place.

A device used to hold or grip an object securely, often found in tools.
He tightened the chuck to secure the piece.
Make sure the chuck is clean before use.
The technician replaced the old chuck with a new one.
drill chuck
keyless chuck
chuck key
gripper
clamp
holder
He decided to chuck the ball to his friend.

To throw something carelessly or casually.
She chucked her keys on the table.
Don't chuck your trash on the ground.
He chucked the old shoes into the bin.
chuck away
chuck out
chuck in
throw
hurl
fling