[f. FOG sb.1]
1. intr. To become overgrown with moss. Sc.
1715. Pennecuik, Tweeddale, 31. About this Town [Peebles], both Fruit and Forrest-trees, have a smoother Skin then else-where, and are seldom seen, either to Fog or be Bark-bound.
1805. Forsyth, Beauties Scotl., I. 525. In a great deal of the lands of the county, the hedges fog at the stem or root, and would entirely die out, were they not cut over within a few inches of the ground.
1810. G. Chalmers, Caledonia, II. iii. 204. There issues a spring, which is called St. Bothans well, and which neither fogs, nor freezes.
2. Agric. (trans.) a. To leave land under fog: see FOG sb.1 and FOGGING vbl. sb. b. To feed (cattle) on fog.
1814. Davies, Agric. S. Wales, I. 545. We saw a piece that had been fogged successively during sixteen years, and was improving annually.
1828. Carr, Craven Gloss. (ed. 2), 158, s.v. When farmers take the cattle out of their pastures in autumn; they say they are boun to fog them.
1855. Ogilvie, Suppl., Fog. In agriculture, to feed off the fog or pasture in winter, as cattle.
1893. Wilts. Gloss., Fog, to give fodder to cattle.