So, apparently "trap" is a slang for mouth (according to freeonlinedictionary anyway). The book I read, describes a man with a "fierce trap of a mouth". If "trap" is slang for mouth, it basically translates as a man with a "fierce mouth of a mouth", which doesn't make any sense... whatsoever!

Anyone?

The context, in case there's any doubt:

"The leader of the guards, Priam was a lanky man with a fierce trap of a mouth."

I've only ever heard slang "trap" used one sentence, "shut yer trap." The one you cite is plain enough, if the word isn't used as slang, and the collision may be deliberate and humorous. Which, and whether good at all is impossible to tell without more context.

more a reference to a jaw trap, no? snapping shut?

Makes sense, etaoin. Thanks.

Quote:

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more a reference to a jaw trap, no? snapping shut?

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Sure. I figure that's where the slang comes from too.