a person or thing that times
a person who measures or records time
a device for indicating or measuring elapsed time
, as a stopwatch.
a device for controlling machinery, appliances, or the like, in a specified way at a predetermined time
: Please put the roast in the oven and set the timer to cook it for two hours.
(in an internal-combustion engine) a set of points actuated by a cam, which
causes the spark for igniting the charge at the instant required.