n.
1.a spirally grooved spindle in a clock that counteracts the diminishing power of the uncoiling mainspring
2.a colored flare used as a warning signal by trucks and trains
3.a friction match with a large head that will stay alight in the wind
4.any igniter that is used to initiate the burning of a propellant
Idiom of the Day
account for (something)
to provide an answer/explanation for something
The bad weather accounts for the fact that only a few people came to the meeting.