Definition of "lohoch"

We may obtain, then, a just idea of the constitution of this liquid [milk], if we look upon it as a soft, liquid substance, a kind of loch,* in which caseine, sugar, &c., are dissolved, and in which the fatty or oily substance is distributed in small, rounded atoms. [Footnote *: Loch, or lohoch, is an Arabian name for a medicine of a consistence between an electuary and a sirup, and usually taken by licking. […]]

1859, Al[fred François] Donné, “Of Professional Nurses”, in Mothers and Infants, Nurses and Nursing. […], Boston, Mass.: Phillips, Sampson and Company, page 67

Uncle James had caught a cold too, so I went with Grissel; and found a chemist who'd been in France, and knew what a loch was and made one for me; […]

1897, George du Maurier, “Part Seventh”, in The Martian: […] (Bell’s Indian and Colonial Library), London, Bombay: George Bell and Sons, page 324

[Rembert] Dodoens specifically recommends the preparation of a lohoch or loch – a 'licking medicine', of middle consistency, between a soft electuary and a syrup – for relief of obstruction, shortness of breath and an old, hard cough.

2011, Graeme Tobyn, Alison Denham, Margaret Whitelegge, “Hyssopus officinalis, Hyssop”, in The Western Herbal Tradition: 2000 Years of Medicinal Plant Knowledge, Edinburgh, London: Churchill Livingstone, page 195, column 2