floss2 (flos)

The flo , or outlet of the slag from the [iron-furnace. Ure, Dict., 11. 997. flo 3 (flos), n. [Also written flosh (in comp. flosh - silk, q. v.) (= Dan. flos ); No person shall cut bent nor pull flo ... before the first of Lammas yearly. Quoted in G. Barry's Hist. Orkney Islands, App., p. 457.