Aru (Aru)
Dry upland meadow or grassland. Also means reason, mind, intellect, understanding or wits (Ma saan aru means “I understand”, a statement often followed by devastating proof that, in fact, they don’t). Part of a fodder and staples street-name group. See Auna.
Arukaskede (Arukased [pl.])
Silver or lowland birches (Sing.: arukask), Betula pendula, aka kask, arukõiv (kõiv is a dialectal, and probably older, name for birch), õmmik (the beneedled), etc. Since Aru or arro also means dry land, this may well reflect the tree’s habitat.
Asfaldi (Asfalt)
Asphalt. Named after nearby asphalt depot. Part of a loose construction-materials group. See Betooni.