any of two families of small parasitic arachnids with barbed proboscis; feed on blood of warm-blooded animals
"The tick attached to my dog's ear and began feeding on its blood."
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"
A tiny woodland arachnid of the suborder Ixodida.
"The farmer brought in his prize tick, which had won first place at the county fair."
A relatively quiet but sharp sound generally made repeatedly by moving machinery.
Ticking.
Credit, trust.
A goat.
In plain English: A tick is a small insect that attaches itself to animals and humans to drink their blood.
"The clock ticked loudly in the empty room, marking every passing second."
Usage: Use "tick" as a noun for the sharp, repetitive sound made by moving machinery or clocks rather than referring to the small insect. When describing this noise, ensure it is presented in contexts involving mechanical movement where no other specific word fits better.
To make a clicking noise similar to the movement of the hands in an analog clock.
"The manager decided to tick his new employee's purchase order since he had a good reputation for paying quickly."
To go on trust, or credit.
In plain English: To tick means to make a small mark on something, usually by checking off an item on a list.
"The clock ticked loudly in the quiet room."
The word tick comes from the Old English ticia, which meant a parasitic animal. It traces its roots back to the Proto-West Germanic language.