(historical) A small portable electro-mechanical rotor machine used to encrypt and decrypt secret messages, made famous by Germany in WWII.

(Britain, gambling) A slot machine, especially one having spinning wheels marked with pictures of fruit.

Any machine operated by placing a coin or token into a slot. / (gambling, US) A gambling machine so operated; a fruit machine or one-armed bandit. / A vending machine.

(computer science) A system of instructions and data directly understandable by a computer's central processing unit.

Any of several devices that use a jet of water or abrasive mixture to clean something

(idiomatic) Someone with considerable sexual prowess. / Any machine that is used for sexual pleasure.

Any machine used in place of a paper ballot. In the model used in the US the voters mark their choice by switching levers and then pulling the master switch to reset the machine and place their vote.

(programming) The set of instructions that a particular computer is designed to execute; generated from an assembly language by an assembler, or from a high-level language by a compiler or interpreter.

A machine used for logging or various other forestry purposes.

a mechanical device, often coin-operated, for determining the weight of an object or person