noun, technical - a device that receives and passes on a signal or an electric current, often used to control a larger electrical system or circuit

verb - to arrange or classify people, objects, or ideas in a particular order based on importance, quality, or value; to have such a position

verb - to place a mark next to an item on a list to indicate that it has been done, bought, finished, dealt with etc.

noun - a disc-like structure (in a playground, in a park etc.) that kids can sit on, which goes around when someone pushes it

noun - an apparatus with a microphone that you put on your head and it plays music etc. through small speakers directly into your ears

noun, American English - a thing with two rows of metal or plastic teeth that fit together, it is used as a fastener on trousers, bags etc.

noun, British English - a thing with two rows of metal or plastic teeth that fit together, it is used as a fastener on trousers, bags etc.

noun - a device that makes it possible for people in different places in a building, on a ship etc. to communicate with each other