Puzzle 11

Grass-trimming machine.

A biological substance posing a threat to health.

Condition when extremities are exposed to cold.

Work without getting paid.

White dog breed with black spots.

This Jamaican was dubbed "the fastest man alive".

Work on various jobs at the same time.

Fun birthday activity, e.g. musical chairs.

Bugs Bunny's foe who wears a flapped hunting hat.

Target score in a game of blackjack or pontoon.

The edge of a town or city.