Meadow. There is both an Aasa tänav, this one here in Uus Maailm, and a Roheline aas in Kadriorg.
Idea, ideal. Not a very old street name: the word aade was borrowed (and the chance of them returning it is almost nil) from Finnish aate, idea, in 1884. Despite the tarmac, part of a metaphysical street-name group. See Edu.
Terrace, cliff, escarpment, bluff. Since COVID, the western 400 m of the street (from Kotermaa) closes at night for several weeks in April every year allowing frogs, also toads and newts, to safely cross one of the “largest amphibian migration corridors” in Estonia on their way to the breeding ponds. All amphibians are protected in Estonia. Prior to this, local volunteers did their best to ensure their safety. Plans for a tunnel are, um, underway. Volunteers always welcome! Bring hi-viz, gloves, bucket, torch…
Foot, base, pedestal (see Pikk Jalg).