Gut

Gut

The tube in the lower part of the body

Through which food passes.

brace

brace

something that draws together and holds tightly .
The polio patient needed a brace straighten his leg.

pound

Pound

He will pound the nail with a hammer.

thud

Thud

 A dull sound like that of something heavy falling to the ground

He dropped the book with a thud .  

shield

Shield

 a broad piece of metal, wood, carried as a protection against weapons.

We wear head guards and gum shields for safety.

unison

Unison

 an identical musical note, or series of notes, produced by several voices singing, or instruments playing, together.

They sang in unison.

grip

                

Grip

to take a firm hold of.

I gripped the stick.

The speaker gripped the attention of her audience.