tick (Noun) — A metallic tapping sound. ex. "he counted the ticks of the clock"
tick (Noun) — Any of two families of small parasitic arachnids with barbed proboscis; feed on blood of warm-blooded animals.
tick (Noun) — A mark indicating that something has been noted or completed etc..
tick (Noun) — A light mattress.
tick (Noun) — Arrangement for deferred payment for goods and services.
tick (Noun) — (informal) a moment.
tick (Verb) — Make a clicking or ticking sound. ex. "The clock ticked away"
tick (Verb) — Make a sound like a clock or a timer. ex. "the clocks were ticking"
tick (Verb) — Sew. ex. "tick a mattress"
tick (Verb) — Put a check mark on, near or next to.