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to flash

to flash

1 8.4
To cover a roof joint with thin metal to stop water entering
  • verb
  • /flæʃ/
  • Specialized
: sellar con chapa metálica
  • We just flash a little metal, grab our Scottie, get the hell out of here.
  • flash the roof
  • flash around the door

Examples

  • And who used to run up to the roof of our first apartment building to flash the traffic helicopters?

    Fiction book (1999)
  • To prevent water from entering the roof joints, the contractor used a special material to flash the vulnerable areas.

  • When installing the roof, it is important to flash around vents to ensure that no moisture gets through.

  • The builders were careful to flash the seams where the roof met the walls to protect against leaks.

Antonyms

67 2.8

Make something visible by removing a cover or letting light reach it

Idioms

in a flash
  • Informal
32 2.5

Very quickly in a single moment

flash in the pan
  • Informal
7 7.2

A person or thing that has a short time of success and then people forget them

quick as a flash
  • Informal
1 2.0

Happen very fast

Phrasal Verbs

11 5.3

To suddenly see or feel a past event as if it is happening now

to flash around
  • Informal
4 7.0

To show off expensive things, like a watch or car, to impress other people

to flash around
  • Texting
1 4.2

To spread news or pictures quickly among many people on the internet

Compounds

hot flash
  • Specialized
24 5.1

A sudden hot feeling and heavy sweating that often happens during menopause

22 3.7

A sudden rise of water that covers land after heavy rain

flash mob
  • Texting
14 4.6

A group of people who suddenly gather in public to perform a planned unusual act and then leave

12 1.7

A small paper card with words or pictures shown quickly to help you learn

9 7.7

A time when a situation can suddenly become violent or very dangerous

flash-forward
  • Literature
9 7.5

A scene in a book or film that jumps ahead to show events in the future

4 2.2

A short bright light that brightens a scene when you take a photo

flash memory
  • Specialized
3 4.2

An electronic chip that stores data even when the power is off

flash bulb
  • Archaic
2 3.5

A small lamp that gives a very bright short light for taking photos

1 3.0

A camera with a built-in light to brighten people or things in low light

flash point
  • Specialized
1 7.5

The lowest temperature at which a liquid gives off enough vapor to catch fire in air

flash-frozen
  • Specialized
1 4.1

Frozen very quickly to keep flavor and nutrients

flash lamp
  • Archaic
1 4.6

A small device that makes a short bright light for taking photos

heat flash
  • Specialized
1 7.6

A very short, strong burst of heat from an explosion that can burn things nearby

shoulder flash
  • Specialized
1 6.8

A cloth badge worn on the shoulder of a military uniform that shows a soldier's unit

flash welding
  • Specialized
1 7.1

To join two metal pieces by heating their ends with electricity until they melt and pushing them together

flash butt welding
  • Specialized
8.9

A process that joins two metal pieces by melting their ends with electricity, often used for rails or pipes

How Protective

to seal
288 2.5
to flash
  • Specialized
1 8.4
to cover
∞ 1.0
to cap
23 3.8

Surface Forms

flash infinitive
flashed past
flashed past participle
flashing present participle
flashes third person singular

Etymology

A helpful way to remember flash in building work is to think of a thin bright strip put quickly along a joint to stop water; this 'flashing' is a quick, protective cover. That's why builders 'flash' around chimneys and corners to keep things dry.