As a Noun: 1. An item of clothing worn on the torso that has a fold of material right round the top, through which the head and neck protrude, which is doubled over. The folded material goes right round the neck and covers part or most of a person's neck. 2. English = skivvy, polo-necked or turtle-necked sweater or jumper. As a Verb or Adjective: 1. A type of collar on a garment which consists of a fold of material right round the top, through which the head and neck protrude, which is doubled over and covers most of a person's neck. English = (be) turtle-necked, (be) polo-necked.