Meaning of watertight

wa•ter•tight

Pronunciation: (wô'tur-tīt", wot'ur-), [key]
— adj.
  1. constructed or fitted so tightly as to be impervious to water: The ship had six watertight compartments.
  2. so devised or planned as to be impossible to defeat, evade, or nullify: a watertight contract; a watertight alibi.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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