Arrest
Something you take when you are tired

Ashtray
A place where people put out cigarettes when the room doesn't have a carpet

Astronaut
When a spaceman scores nothing in his maths exam

Astronomer
A night watchman

Atom
A male cat

Atomic Bomb
Something that makes molehills out of mountains

Attack
A small nail

Attendance
Dance for 10 people

Auctioneer
A man who looks forbidding

Audio Visual
Sign language

Autobiography
A car's log book

Autograph
A chart showing the sales of cars

Automate
When your best friend is a robot