Dictionary

1waterproof

adjective wa·ter·proof \ˈw-tər-ˌprüf, ˈwä-\

: designed to prevent water from entering or passing through

: designed so that water alone will not remove it

Full Definition of WATERPROOF

:  impervious to water; especially :  covered or treated with a material (as a solution of rubber) to prevent permeation by water
wa·ter·proof·ness noun

Examples of WATERPROOF

  1. This suntan lotion is waterproof.
  2. <luckily, my backpack is waterproof, so my clothes didn't get wet>

First Known Use of WATERPROOF

1736

2waterproof

noun

Definition of WATERPROOF

1
:  a waterproof fabric
2
chiefly British :  raincoat

Examples of WATERPROOF

  1. <remember your waterproof if you're walking around London in the winter>

First Known Use of WATERPROOF

1799

Related to WATERPROOF

Synonyms
mac (or mack) [British], mackintosh (also macintosh) [chiefly British], oilskin, slicker, raincoat [chiefly British]

3waterproof

verb

: to put a substance on (something) in order to make it waterproof

Full Definition of WATERPROOF

transitive verb
:  to make waterproof
wa·ter·proof·er noun

Examples of WATERPROOF

  1. He waterproofed the deck by applying sealer to it.

First Known Use of WATERPROOF

1841

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