[? Infantile variant of KIT sb.3] Used as a call to a cat.

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1828.  Craven Gloss., Tit, this, with its adjunct puss, is frequently used for calling a cat.

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1837.  Dickens, Pickw., xvi. ‘It must have been the cat, Sarah,’ said the girl…. ‘Puss, puss, puss—tit, tit, tit.’

3