cap
The culminating stone at the top of a column or pilaster, often richly carved. 2. A raised cover for a chimney, usually in the form of a slab or cornice. Photo from Metuchen, New Jersey, 2019. 2. An internally threaded fitting for enclosing the end of a pipe. 3. When capitalized may refer to Conservation Assessment Program with the acronym CAP. (Kremer, 2023)