poh

The negative of the base 10 logarithm of the concentration of hydroxide ions, measured in moles per liter.

Initialism of powered-on hours.

Indicating that something is trivial and not worth consideration.

Oh, poh! they might have been counted some how or other, unless indeed they were so numerous as to require all our people to stand sentinel round them.

Poh, it's from your sister at Lyons, and contains good news: read it.

Expressing disagreement or irritation

Lady Anſw[erall]. Colonel, ſome Ladies of your Acquaintance have promis'd to breakfast with you, and I am to wait on them; what will you give us? / Col[onel Atwit]. Why, faith, Madam, Batchelors Fare; Bread and Cheeſe, and Kiſſes. / Lady Anſw. Poh! what have you Batchelors to do with your Money, but to treat the Ladies? you have nothing to keep but your own Four Quarters.

Oh — poh ! how do you know I had any call to the dark man - and as for Sally — sure there she's westwards in" the fields ; take her, and welcome. Keep out o' my way now, I'd advise you.

Expressing disgust or repulsion.

Poh it's disgusting, Mr. Caudle.

But if my way were written down and printed, he would not touch it. "Poh, it's bookish !"