noun, British English - a small box on a form, screen, or document that can be ticked (checked) or left empty to indicate a choice, selection, or preference
noun, American English - a small box on a form, screen, or document that can be ticked (checked) or left empty to indicate a choice, selection, or preference
noun - a detailed plan or design that outlines how something will be built or achieved
noun, formal - a very large amount of something, more than is needed or can be used