Small decorative or fastening pieces, like shirt studs or ear studs

• Short earrings with a post and back

Vertical framing members in a wall

• Uprights that support sheathing and drywall

Small protrusions on footwear or tires for traction

• Replaceable pegs on soccer boots or metal pins on snow tires

Third-person singular of stud: to set with studs

• To dot or cover a surface with many small items

Male breeding animals, especially stallions kept for stud

• Breeding establishments housing such animals