tick - noun

a metallic tapping sound

any of two families of small parasitic arachnids with barbed proboscis; feed on blood of warm-blooded animals

a mark indicating that something has been noted or completed etc.

a light mattress

tick - verb

• make a clicking or ticking sound
• make a sound like a clock or a timer
• sew
• put a check mark on or near or next to

tick - thesaurus

beat   check   click   mark   retick   ticking   ticktack   ticktock