tick in WordNet English dictionary

1. make a sound like a clock or a timer
   "the clocks were ticking"; "the grandfather clock beat midnight"
   tick  ticktock  ticktack  beat 
   
2. put a check mark on or near or next to
   "Please check each name on the list"; "tick off the items"; "mark off the units"
   check  check off  mark  mark off  tick off  tick 
   
3. make a clicking or ticking sound
   "The clock ticked away"
   click  tick 
   
4. sew
   "tick a mattress"
   tick  retick 
   

1. a mark indicating that something has been noted or completed etc.
   "as he called the role he put a check mark by each student's name"
   check mark  check  tick 
   
2. any of two families of small parasitic arachnids with barbed proboscis; feed on blood of warm-blooded animals
   tick 
   
3. a light mattress
   tick 
   
4. a metallic tapping sound
   "he counted the ticks of the clock"
   tick  ticking