a mark (✓) used to indicate that an item in a list or text is correct or has been chosen, checked, or dealt with

a regular short, sharp sound, especially that made by a clock or watch

the comforting tick of the grandfather clock

the smallest recognized amount by which a price of a security or future may fluctuate

mark (an item) with a tick or select (a box) on a form, questionnaire, etc. to indicate that something has been chosen, checked, approved, or dealt with

just tick the appropriate box below

(of a clock or other mechanical device) make regular short, sharp sounds, typically one for every second of time that passes

I could hear the clock ticking

a parasitic arachnid that attaches itself to the skin of a terrestrial vertebrate from which it sucks blood, leaving the host when sated. Some species transmit diseases, including tularaemia and Lyme disease

a worthless or contemptible person

he was shown up in court for the little tick that he was

a fabric case stuffed with feathers or other material to form a mattress or pillow