Green’s Dictionary of Slang

g.h. n.

[orig. printers’ jargon: George Horne: stale news; supposedly the name of a compositor given to recounting such irrelevances]

stale or irrelevant news.

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[UK]A. Binstead Mop Fair 118: Do you mind bein’ mum — absolutely g.h. — as to exact nature of Lady B’s indisposition.