Crayfish means: Any of numerous freshwater decapod crustaceans in superfamily or , resembling the related lobster but usually much smaller.. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.
crayfish
Any of numerous freshwater decapod crustaceans in superfamily or , resembling the related lobster but usually much smaller.
Definitions
Australia
#1·Apr 27, 2026AUS
Any of numerous freshwater decapod crustaceans in superfamily or , resembling the related lobster but usually much smaller.
Origin: Alteration (by folk etymological influence of fish) of (whence modern dialectal crevis), from , from , diminutive of , from , possibly from , to scratch, crawl, or from a word folk-etymologically influenced by this root. Akin to (Modern ), , , . More at crab.. Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).
For parents
Crayfish means: Any of numerous freshwater decapod crustaceans in superfamily or , resembling the related lobster but usually much smaller.. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.
For ESL learners
crayfish means: Any of numerous freshwater decapod crustaceans in superfamily or , resembling the related lobster but usually much smaller.. Register: neutral, standard English. A common learner mistake is using the word in a register it does not fit, or assuming a single global meaning; native speakers immediately notice when slang appears in formal contexts, so always check the surrounding register before producing it yourself.
Cluster: joy
Heard in the wild
““Endangered crayfish re-introduced to Yorkshire Dales.” — BBC #EndangeredSpeciesNews #Endangered #Fish”
— Bluesky· May 2026
Was this helpful?
Comments
Australia
#2·Apr 27, 2026AUS
(AU) A freshwater crayfish (family ), such as the gilgie, marron, or yabby.
Was this helpful?
Comments
Australia
#3·Apr 27, 2026AUS
(AU, NZ, South Africa) A rock lobster (family ).
Was this helpful?
Comments
For specific readers
Why is this section here?
Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.
Used in
Australia
Have a better definition?
Add your own interpretation of "crayfish".
Related vocabulary
See also
🇦🇺About Australian & NZ slang slang
Aussie and Kiwi vocabulary — bogan, daggy, brekkie, sheila, bach, jandals — the whole Antipodean lexicon, including outback dialect, surf and beach culture, and Sydney/Melbourne street slang.
See all Australian & NZ slang slang on Slangora.
Tags
Other words near "crayfish" (C)
crawthumpercrawthumpingcraybaitcrayboatcray-craycray-darcraymancrayon eatercraypotcrayturcrazier than a June bugcrazo
Browse all slang words starting with C.