noun, technical - a device or a part of a machine consisting of a bar or wheel with a set of angled teeth, allowing motion in one direction only, used in tools or mechanisms
noun - the act of refusing to buy, use, or participate in something as a way of protesting or expressing disapproval
verb - to support a person, organization, or activity financially or by providing resources
adjective - in working order; able to perform its intended purpose
noun - the number of people who have registered or been accepted in an organization, institution, or course