A1[C]a separate piece of something, or a piece that combines with other pieces to form the whole of something: We learned about all the different parts of the digestive system.The lower part of her spine was crushed in the accident.I think there's always a part of you that doubts what you're doing.Fresh fruit and vegetables form an essential/important part of a healthy diet.There'll be snow in parts (= particular areas)of the Midlands tonight.Words meaning parts of thingsB2[C]one of the pieces that together form a machine or some type of equipment: He works for a company that makes aircraft parts.Words meaning parts of things›[C]a single broadcast of a series of television or radio programmes or a division of a story: Next week we publish part three of 'The Diaries'.The programme will be shown in two parts.Programmes and other broadcasts›[C]one of two or more equal, or almost equal, measures of something: Mix one part of the medicine with three parts water.Words meaning parts of thingsB1[C]one of the characters in a film, play, or dance, or the words, actions, or movements that are said or done by that character: He's got a small part in the school play.She plays the part of the sexy blonde waitress.Casting, roles and scripts›[C]the music that a particular musician plays in a groupMusical piecesthese partsinformal›used to refer to an area of the country: We don't see many foreigners in these parts.Parts of countries