tracer
word
Definition
A tracer is a special bullet that leaves a visible trail so you can see its path, or a device or tool used to track or follow something's movement, such as in technology or science.
Usage & Nuances
Used in military, science, and technology contexts: 'tracer bullet' is common in weaponry, 'tracer' for tracking devices or software. Not usually used in daily conversation. 'Tracer' can refer to both an object that leaves a trail and a device that tracks movement.
Example Sentences
A tracer bullet makes it easier to see where you are shooting at night.
basic
During the training exercise, they fired tracers so everyone could see the bullet paths.
natural
The detective placed a tiny tracer in the suspect's car to monitor his movements.
natural
Scientists used a tracer to follow the path of the water in the river.
basic
The new phone app includes a tracer feature for lost devices.
basic
We watched as the tracers lit up the sky during the fireworks show.
natural