Third-person singular present of dirl (to pierce or tingle); or the plural noun form referring to multiple instances of tingling sensations.
From the Scottish verb 'dirl,' following standard English rules for adding -s to form the third-person singular or to pluralize nouns.
Even as a plural noun, 'dirls' remains intensely Scottish—it's the kind of word that probably won't survive in standard English unless Scottish literature and culture keep it alive.
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