rivet

Noun

• 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

• ornament consisting of a circular rounded protuberance (as on a vault or shield or belt)

Verb

• hold (someone's attention)
  • The discovery of the skull riveted the paleontologists
    

• fasten with a rivet or rivets

• direct one's attention on something
  • Please focus on your studies and not on your hobbies
    

Related words

• Synonyms: 
  stud , concentrate , focus , center , centre , pore