StoneMaven's Stuff

and the forest began to sing: Orkneyjar glossary

aitran - raining, of a cold bitter rain or drizzle. Old Norse eitr, poison; eitrkaldr, bitterly cold.

attry - of weather - bitter, stormy, cold, &c. See aitran.

bat - a gust of wind. Probably Norse bad, from bada, v., to crush or trample down, knead, &c. See also however, gaelic, bád, s.f.