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
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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
WATERPROOFED Defined for Kids

1waterproof

adjective wa·ter·proof \ˌw-tər-ˈprüf, ˌwä-\

Definition of WATERPROOF for Kids

:  not letting water through <a waterproof tent>

2waterproof

verb
wa·ter·proofedwa·ter·proof·ing

Definition of WATERPROOF for Kids

:  to make something resistant to letting water through

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