Also urh. [Echoic. Cf. HURR v.] An inarticulate sound, uttered instead of a word that the speaker is unable to remember or bring out.

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1846.  O. W. Holmes, Rhymed Lesson, Poems (1896), 50/2. When you stick on conversation’s burs, Don’t strew your pathway with those dreadful urs.

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1891.  Pall Mall G., 13 June, 2/1. The only pauses are the pauses of rhetoric, and the hesitating ‘urh, urh’ is never heard.

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