stud, rivet -- (ornament consisting of a circular rounded protuberance (as on a vault or shield or belt))
rivet -- (heavy pin having a head at one end and the other end being hammered flat after being passed through holes in the pieces that are fastened together)
Overview of verb rivet
The verb rivet has 3 senses
concentrate, focus, center, centre, pore, rivet -- (direct one's attention on something; "Please focus on your studies and not on your hobbies")
rivet -- (fasten with a rivet or rivets)
rivet -- (hold (someone's attention); "The discovery of the skull riveted the paleontologists")