Which of the following terms means 'to lose fluid through an opening'?

The term 'leck' refers to the act of losing fluid through an opening. This is often associated with leaks, where a substance such as water or oil escapes from a container or system, indicating an unintended loss of that fluid. In technical contexts, it is important to identify and repair such leaks to maintain system integrity and efficiency. The other terms do not convey this specific meaning; for example, 'nick' typically implies making a small cut, 'loosen' refers to making something less tight, and 'lubricate' involves applying a substance to minimize friction, rather than losing fluid. Thus, 'leck' accurately captures the concept of fluid loss through an opening.