wrench
n.— «Adams already had experience fixing bicycles because he did it so much on his own. Soon after completing the bicycle school, DNS closed the lab where Adams was stationed. He decided to became a bike mechanic or—as they call them in the bicycle industry—a “wrench” at a bike shop in Berkeley, Calif.» —“Entrepreneur loves being a ’wrench'” by Caleb Sheaffer Citizens Voice (Wilkes-Barre, Pennsylvania) Mar. 9, 2008. (source: Double-Tongued Dictionary)
Further reading
So you’ve long dreamed of writing fiction, but don’t know where to begin? There are lots of ways to get started — creative writing classes, local writing groups, and books with prompts to get you going. The key is to get started, and...
Advice about college essays from the winner of a top prize for children’s literature: Kelly Barnhill encourages teens to write about experiences that are uniquely their own, from a point of view that is theirs and no one else’s. Plus...