IPA: /tɒk/
KK: /tɑk/
A sound that is similar to a click, often made by a clock or timer.
I could hear the tock of the clock in the quiet room.
This word originates from Middle English 'tocke', meaning a sound made by a clock or a similar device. It refers specifically to the sound that indicates the passage of time, often associated with the ticking of a clock.
Think of the sound a clock makes as it marks the passage of time — that's what 'tock' represents.