drainout means A channel for the purpose of draining liquid out of a system. Lexicurio rates it Sui generis — a strength score of 97 out of 100.
Etymology
Deverbal from drain out.
noun
- A channel for the purpose of draining liquid out of a system.“The valves are removable from the surface without excavating the hydrants, and are provided with automatic drainouts with brass nipple, set below frost line, and are surrounded with a broken stone blind drain.”