Skip to main content
rat snake

rat snake

1 5.3
A snake that is not poisonous and eats rats and mice
  • noun
  • /ræt sneɪk/
  • US
translation icon : serpiente rata
  • Wouldn't you know? We walk the long way back to camp, and Heitman traps a black rat snake next to the path.
  • a black rat snake
  • a three-foot rat snake
  • a foot-long rat snake

And you know, in New York we had, you know, black rat snakes, Garter snakes, whatever.

Examples

  • Rat snakes aren't that big.

  • Gray rat snakes are dark to light gray with darker gray or brown blotches.

    Blog text (12)
  • - I think it was a rat snake.

  • Just a little rat snake.

  • What I did is replace them with rat snakes to keep the mouse population down.

    Blog text (14)
  • It's a rat snake!

  • There were crows in the limbs above him, three of them, and they were harrying a rat snake they had discovered up in the tree.

    Fiction book (1997)
  • The farmer introduced rat snakes to control the rodent population in his fields.

  • While hiking in the woods, we spotted a rat snake sunbathing on a rock.

  • In many regions, rat snakes are valued for their ability to manage pests like mice and rats.

Synonyms

genus Elaphe
vsrat snake
  • Specialized
9.8

A group of snakes that are not poisonous, like rat snakes, found in North America and Eurasia

is the general common term rather than a scientific genus
Elaphe
vsrat snake
  • Specialized
9.9

A snake that is not venomous and lives in North America and Eurasia and eats rats and mice

is the general common term rather than a scientific genus
Elaphe obsoleta
vsrat snake
  • Specialized
9.9

A large not venomous black snake that lives in eastern North America and is often called the black rat snake

is the broader group covering many similar nonvenomous species
black rat snake
vsrat snake
  • US
5.3

A large shiny black snake from North America that is not venomous and eats rats and mice

is the wider category including many such regional species
Ptyas
vsrat snake
  • Specialized
9.9

A non-venomous Asian rat snake with a long thin body that moves quickly

is the general common label for similar nonvenomous rodent hunters
Ptyas mucosus
vsrat snake
  • Specialized
9.9

A large snake from South and Southeast Asia that lives near people, is not poisonous, and eats rats

is the broader term covering many regional nonvenomous species
Indian rat snake
vsrat snake
  • Indian
8.0

A large snake from South and Southeast Asia that is not poisonous and often enters buildings to catch mice

is the general group term not limited to indoor behaviour
red rat snake
vsrat snake
  • US
5.5

A large harmless reddish snake from the southern United States that lives on farms and in woods

is the wider category that includes many species across regions

How Big

anaconda
16 5.6
Python
  • Specialized
3 3.9
boa
19 5.4
rat snake
  • US
1 5.3
garter snake
  • US
4 3.8

Surface Forms

rat snake singular
rat snakes plural

Morphology

rat + snake

The compound 'rat snake' is directly interpretable as a type of snake associated with rats — i.e., a snake that preys on or is commonly found near rats — so a B1 learner who knows 'rat' and 'snake' can infer the meaning. This noun+noun compounding is a regular, compositional pattern found across languages, making the expression transparent.

Etymology

The noun rat snake comes from a simple image: the part rat names the animal it hunts and snake names the hunter. These snakes often live in barns and climb trees to catch 'rats' and 'mice', so the name now means a snake that is not poisonous and eats these pests.