bristle in WordNet English dictionary

1. be in a state of movement or action
   "The room abounded with screaming children"; "The garden bristled with toddlers"
   abound  burst  bristle 
   
2. react in an offended or angry manner
   "He bristled at her suggestion that he should teach her how to use the program"
   bristle 
   
3. rise up as in fear
   "The dog's fur bristled"; "It was a sight to make one's hair uprise!"
   bristle  uprise  stand up 
   
4. have or be thickly covered with or as if with bristles
   "bristling leaves"
   bristle 
   

1. a stiff hair
   bristle 
   
2. a stiff fiber (coarse hair or filament); natural or synthetic
   bristle