ALL meanings of watertightness
wa·ter·tight
W w - noun watertightness (rare) The condition of being watertight. 1
- adjective watertightness constructed or fitted so tightly as to be impervious to water: The ship had six watertight compartments. 1
- adjective watertightness so devised or planned as to be impossible to defeat, evade, or nullify: a watertight contract; a watertight alibi. 1