dasher
nounUK /ˈdæʃə/
US /ˈdæʃər/
A person or thing that moves very fast.
The little dasher ran across the playground before anyone could catch him.
OTHER MEANINGS
2. A part of a machine that stirs or mixes something, like in an ice cream maker.
The dasher spun around inside the churn to make the ice cream smooth.
3. One of Santa's reindeer.
Dasher pulled the sleigh through the snowy sky on Christmas Eve.
4. A person who writes or sends a message quickly, or a lively, stylish person.
She was quite a dasher at the party, charming everyone she met.