(nautical) a truncated conical buoy, normally painted red and white, and numbered with even numbers, used to show the port side of a channel; the starboard side is marked with a conical buoy

(US, military) A galvanized trash can. / (historical, slang) A shell fired by the German Army in World War I.

A lightweight metallic can containing beer.

(informal) I cannot do it.

A pressurized canister that ejects its contents from a nozzle when a button is pressed; used for paint, cosmetics, lubricants, insecticide etc.

(slang, boxing, derogatory) An inferior fighter in the sport of boxing. The insinuation is that an up-and-coming fighter takes on a "tomato can" to burnish his reputation and record.

A device used to open tin cans, usually by slicing the lid off. / (roller derby) A shoulder hit to the chest, usually accomplished while moving from a crouched to a standing position.

(informal) confident and willing to get a job done.

A canister whose pressurized contents may be released as an aerosol when a button is pressed.

A game played by children, similar to tag, where tagged players are freed if an untagged player manages to kick over a discarded tin can etc. set up for this purpose.