A kit is a group of items that are kept together, often in the same container, because they are all used for similar purposes.

Kit is special clothing and equipment that you use when you take part in a particular activity, especially a sport.

A kit is a set of parts that can be put together in order to make something.

If someone gets their kit off or takes their kit off, they take off all their clothes. If they keep their kit on, they do not take off all their clothes, even though people may be expecting them to.