Promptorium Parvulorum (Harl. 221) 340 Mysty[n], or grow roky, as wedur, and mysty, obnubilo.

1722 W. Hamilton Life of Sir William Wallace xii. iv. 330 A Rocky Mist fell down at break of Day.

a1825 R. Forby Vocab. E. Anglia (1830) Roky, foggy.

1828 W. Carr Dial. Craven (ed. 2) Roaky, drizzly.

1872 Ld. Tennyson Last Tournament in Gareth & Lynette 121 [He] in a roky hollow, belling, heard The hounds of Mark.

1902 H. R. Haggard Stella Fregelius 91 It was the third of these ‘roky’ nights, and the sea-fog poured along the land.

1971 Country Life 11 Mar. 532/3 Gooin' to be a rokey misty owd night, Marster.

1988 Guardian 26 Mar. 18/6 It was no surprise to me..when I first moved to live near Roker Park to discover the area swathed in mist. It was just living up to its name—very ‘roky’.

1993 E. A. Proulx Shipping News v. 40 They walked around in the roky damp, in a silence.

1889 Minutes Proc. Inst. Civil Engineers 98 146 He did not find that roaky exterior existed in the ingots at present being made.

1932 E. Gregory Metall. ii. 58 Some of these cracks may escape detection in the forge, and unsound roky billets are thus produced.

1940 E. N. Simons & E. Gregory Steel Manuf. xix. 141 It is not uncommon for these cracks to be unnoticed in advance of forging or rolling, and they then elongate and ‘open-out’, producing ‘roky’ billets.

1992 D. K. Chakrabarti Early Use Iron India iii. 91 A complete longitudinal section showed the ingot to be very porous... The specimen was considered ‘roaky’.