especially: a device that produces a spark for lighting a torch, burner, etc.
There were still some matches left, but they were too precious to use unnecessarily. The only alternatives now were a welder's sparker and a magnifying glass. M. K. Wren
It's a very affordable project to do and the result is a conversation sparker too. Chrystal Johnson
Pink was the prevalent shade of the night, with Gemma Chan, Angela Bassett … and even that tidy joy sparker herself, Marie Kondo, choosing the happy hue. Michele Parente