rivet

nouns

ornament consisting of a circular rounded protuberance (as on a vault or shield or belt)
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
is a type of (narrower)
a small slender (often pointed) piece of wood or metal used to support or fasten or attach things

verbs

direct one's attention on something
"Please focus on your studies and not on your hobbies"
fasten with a rivet or rivets
is derived from
is derived from
is derived from
is derived from
is a type of (narrower)
cause to be firmly attached
"fasten the lock onto the door"; "she fixed her gaze on the man"
hold (someone's attention)
"The discovery of the skull riveted the paleontologists"
verb group
direct one's attention on something
"Please focus on your studies and not on your hobbies"
is a type of (narrower)
consume all of one's attention or time
"Her interest in butterflies absorbs her completely"