It seems there is no locally derived word for this (if there is - please let us know): the word in the dictionary anann seems derived from continental languages, many of which have ananas or a variant.

The earliest examples I have of it are from songs from the Déise around the 1910s and 1920s where it is "Anann", so this seems to be a borrowing from possibly French. Others might have older examples.

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The dialect I use is Cork Irish.
Ar sgáth a chéile a mhairid na daoine, lag agus láidir, uasal is íseal

Would you mind sharing the song in question? (I'm collecting songs, stories etc from the Déise )