# A rattrap mouth?

**URL:** <https://boards.straightdope.com/t/a-rattrap-mouth/639562>\
**Category:** Cafe Society\
**Created:** [November 1, 2012, 2:02pm UTC](https://boards.straightdope.com/t/a-rattrap-mouth/639562 "2012-11-01T14:02:09Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Neverending\_Elbow](https://avatars.discourse-cdn.com/v4/letter/n/e274bd/32.png) [@Neverending\_Elbow](https://boards.straightdope.com/u/Neverending_Elbow)\
**Post date:** [November 1, 2012, 2:02pm UTC](https://boards.straightdope.com/t/a-rattrap-mouth/639562/1 "2012-11-01T14:02:09Z")

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OK, so I was reading me some Howard (Shadows in the Moonlight, to be exact), and one of the characters was described as having a “rattrap mouth”.

What?

I can’t really imagine what it would look like. The OED wasn’t much help, saying: Also fig., and attrib. in sense ‘resembling a rat-trap’.

Yes, well, that’s what I don’t get. They had this helpful example:

1978 R. Westall Devil on Road xxiii. 217 He had a rat-trap jaw and little deep-set eyes.

A rat-trap jaw seems to make a bit more sense, but I still can’t really visualise it.

Who knows, maybe I even know a few people with rattrap mouths, and just don’t know it.

So, any ideas? Also, other examples of baffling descriptions are welcome. I can’t be the only one having troubles in this regard.

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**Author:** ![History\_Mystery\_and\_the\_Wolf](https://avatars.discourse-cdn.com/v4/letter/h/53a042/32.png) [@History\_Mystery\_and\_the\_Wolf](https://boards.straightdope.com/u/History_Mystery_and_the_Wolf)\
**Post date:** [November 1, 2012, 2:35pm UTC](https://boards.straightdope.com/t/a-rattrap-mouth/639562/2 "2012-11-01T14:35:03Z")

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I assume it’s just square and snappy. Honestly though “rat trap mouth” sounds more like a description of a a cutting or sniping personality, rather than a physical appearance.

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**Author:** ![TruCelt](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/trucelt/32/523_2.png) [@TruCelt](https://boards.straightdope.com/u/TruCelt)\
**Post date:** [November 1, 2012, 3:45pm UTC](https://boards.straightdope.com/t/a-rattrap-mouth/639562/3 "2012-11-01T15:45:02Z")

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I"m guessing it means this kind? [http://www.domyownpestcontrol.com/images/trex\_large.jpg](http://www.domyownpestcontrol.com/images/trex_large.jpg)

That’s what I was picturing. Very squre jaw, and the habit of closing the mouth hard and tight-lipped.

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**Author:** ![Neverending\_Elbow](https://avatars.discourse-cdn.com/v4/letter/n/e274bd/32.png) [@Neverending\_Elbow](https://boards.straightdope.com/u/Neverending_Elbow)\
**Post date:** [November 1, 2012, 3:55pm UTC](https://boards.straightdope.com/t/a-rattrap-mouth/639562/4 "2012-11-01T15:55:01Z")

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> [@TruCelt](#):
>
> That’s what I was picturing. Very squre jaw, and the habit of closing the mouth hard and tight-lipped.

Yes, that helps. I guess it was the ‘mouth’ which was putting me off. A jaw like that is easier to imagine.

Thank you both for helping this non-native speaker of English.

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**Author:** ![Lust4Life](https://avatars.discourse-cdn.com/v4/letter/l/ecc23a/32.png) [@Lust4Life](https://boards.straightdope.com/u/Lust4Life)\
**Post date:** [November 2, 2012, 4:27pm UTC](https://boards.straightdope.com/t/a-rattrap-mouth/639562/5 "2012-11-02T16:27:01Z")

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Could it be clenched teeth ?

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**Author:** ![corkboard](https://avatars.discourse-cdn.com/v4/letter/c/e9bcb4/32.png) [@corkboard](https://boards.straightdope.com/u/corkboard)\
**Post date:** [November 2, 2012, 6:45pm UTC](https://boards.straightdope.com/t/a-rattrap-mouth/639562/6 "2012-11-02T18:45:30Z")

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That’s actually what I think of when I see Christian Bale.

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**Author:** ![Neverending\_Elbow](https://avatars.discourse-cdn.com/v4/letter/n/e274bd/32.png) [@Neverending\_Elbow](https://boards.straightdope.com/u/Neverending_Elbow)\
**Post date:** [November 2, 2012, 10:22pm UTC](https://boards.straightdope.com/t/a-rattrap-mouth/639562/7 "2012-11-02T22:22:11Z")

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Really? Christian Bale? He looks a bit… pensive, but a rat-trap mouth?

Hmmm. This is more complicated than I thought.
