(countable, uncountable) A type of pasta made in the shape of long thin strings, often used as the main ingredient in dishes like spaghetti bolognese.

(by extension, countable) A derogatory term for an italian person and can also refer to a type of film known as a spaghetti western.

(by extension, uncountable, informal, often attributively) Something that physically resembles spaghetti in appearance or consistency, or in being tangled, and can also refer to electrical insulating tubing or electrical wiring in the field of electrical engineering, as well as roads forming a complex junction, especially one with multiple levels on a motorway in the context of road transport.

(uncountable, figurative, informal) A term used in programming to describe unstructured or poorly structured program source code.

(rare) plural of spaghetto

(transitive) To serve someone spaghetti, to stretch or elongate someone or something, or to cause something to become tangled.

(intransitive) Eat spaghetti, become longer and thinner, or become tangled.