flashing: meaning, definition, pronunciation and examples

B2
UK/ˈflæʃɪŋ/US/ˈflæʃɪŋ/

Technical (construction), Neutral (general), Informal/Slang (vulgar)

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Quick answer

What does “flashing” mean?

A strip of impervious material used to prevent water penetration at the junction between a roof and a vertical surface (like a wall or chimney).

Audio

Pronunciation

Definition

Meaning and Definition

A strip of impervious material used to prevent water penetration at the junction between a roof and a vertical surface (like a wall or chimney).

1. The process of emitting a bright, intermittent light. 2. (Verb) to display something briefly or suddenly. 3. (Slang, vulgar) the act of exposing one's genitals briefly in public.

Dialectal Variation

British vs American Usage

Differences

The core construction term is identical. The slang meaning is common to both varieties.

Connotations

Identical connotations across varieties for each sense. The construction term is purely technical.

Frequency

The construction term is moderately common in relevant contexts (DIY, building). The light/display verb sense is very common. The slang sense is recognized but not polite.

Grammar

How to Use “flashing” in a Sentence

[N] + flashing (e.g., chimney flashing)flashing + [N] (e.g., flashing lights)[V] + flashing (e.g., saw something flashing)[V] + flashing + [N] (e.g., flashing a warning)

Vocabulary

Collocations

strong
roof flashinglead flashingmetal flashinginstall flashingleaking flashing
medium
flashing lightflashing neon signflashing eyesflashing smile
weak
flashing blue lightsflashing byflashing backflashing on

Examples

Examples of “flashing” in a Sentence

verb

British English

  • The driver behind was flashing his headlights to warn us.
  • She flashed her security pass at the sensor.

American English

  • The police car was flashing its lights but not using the siren.
  • He flashed a big smile for the camera.

Usage

Meaning in Context

Business

Rare, unless in construction/real estate reports: 'The roof repair includes replacing all lead flashings.'

Academic

Can appear in physics or engineering texts describing light phenomena or signal processing.

Everyday

Most common as the verb form (e.g., 'He was flashing his lights', 'A light was flashing'). The construction term is used in DIY contexts.

Technical

Primary domain: building construction. Precise term for a specific component.

Vocabulary

Synonyms of “flashing”

Strong

weatherproofing (for construction)damp-proof course (related construction)

Neutral

glintingglitteringsparklingblinkingflickering

Weak

shininggleamingdisplaying

Vocabulary

Antonyms of “flashing”

steady lightconstantconcealinghiding

Watch out

Common Mistakes When Using “flashing”

  • Using 'flashing' as a direct translation for 'мигающий' in all contexts (better: 'blinking', 'flickering'). Confusing the countable noun (a flashing) with the uncountable gerund (the flashing of lights).

FAQ

Frequently Asked Questions

No. While it is a specific technical term in construction, it is more commonly encountered as the present participle/gerund of the verb 'to flash' (e.g., flashing lights).

Yes, it can function as a participial adjective, as in 'a flashing light' or 'flashing indicators'.

Both imply intermittence. 'Blinking' often suggests a slower, more regular on-off cycle (like a turn signal or a cursor). 'Flashing' can imply a brighter, more urgent, or less regular burst of light (like a police beacon or a camera flash).

Because it is a strong, offensive meaning. Misunderstanding the context (e.g., a news headline) could lead to confusion, while unintentionally using it could cause serious offence.

A strip of impervious material used to prevent water penetration at the junction between a roof and a vertical surface (like a wall or chimney).

Flashing is usually technical (construction), neutral (general), informal/slang (vulgar) in register.

Flashing: in British English it is pronounced /ˈflæʃɪŋ/, and in American English it is pronounced /ˈflæʃɪŋ/. Tap the audio buttons above to hear it.

Phrases

Idioms & Phrases

  • red flashing light (a clear warning sign)
  • flash in the pan (something brief and not sustained)

Learning

Memory Aids

Mnemonic

Imagine a strip of metal FLASHing in the sun on the edge of a roof, keeping the water out.

Conceptual Metaphor

WARNING/ATTENTION IS FLASHING (flashing lights, flashing signs). BRIEF VISIBILITY IS FLASHING (flashing a pass, flashing a smile).

Practice

Quiz

Fill in the gap
To prevent water ingress, the roofer installed new lead around the base of the chimney.
Multiple Choice

In which context does 'flashing' refer to a physical object?

flashing: meaning, definition, pronunciation and examples | Lingvocore