Vikimõisa (Vikimõis) 
Uncertain 2023 addition to Tallinn’s streets, if street indeed it is. Information elusive. Related to a former manor house near the Harku lake, named after whichever whim went through its benighted owners’ minds:
- 1798: Cramers Höfchen (‘Cramer’s court’, translated as suvemõis (summer manor), belonging to a customs inspector called Johann Cramer of various misspellings (Cramer, Kraamle, Krameri…)
- Early 1800s: Birkenhof
- 1871: Fick aka Viki which could be one of the various poolmõis (see Mõisa), after, apparently, a pharmacist Eduard Wilhelm Fick
As to its possible allasum (Ward) status or identity, nothing is clear: once pin-pointed in XGis, now it’s putting out ‘loves you’ / ‘loves you not’ signals and I’m not ready to stalk. Pending official update.
Ülemistejärve (0) 
See Ülemiste and Järve. NB: we’re at the end of the dictionary so it should be clear by now. The lake itself is a place-name and thus nominative, Ülemiste Järv, while this is the District of and therefore genitive, and, being a District name, does not seem to even have a nominative (see Nõmme).
Sõjamäe (Sõjamägi)
Tricky, literally War Hill, its meaning could range from Soldiers’ Knoll, Martial Mountain, Battle Bump, to Bruise. Military vantage point / observation post sounds good too (see Mäe for discussion). Most faithful, however, is Battle Hill, named after what is believed to be the site of a battle following the Jüriöö Ülestõus (St. George’s Night Uprising) of 1343-04-23 where the Teutonic Order killed some 3000 Estonians in an orgy of attrition and revenge (see Lasnamäe). Streets today come in all sizes: Väike-Sõjamäe, Kesk-Sõjamäe and Suur-Sõjamäe, formerly V-, K & S-Weimarschofi after manor house belonging to master butcher Johann Weymar (1815), but native Estonians long preferred the Sõjamäe variants or even, according to TT, in the 18th C, Tapomäe, where Tapo seems to come from tapp:tapa, slaughter or murder. To trivialise the uprising, the German overlords renamed or nicknamed Sõjamäe as Seamäe (Pig Hill), Schweinsberg in German, sometime in the 19th C (and still printed on maps until at least 1924). The name can still be seen on the 1914 map of Tallinn accompanying Baedeker’s Russia, with Teheran, Port Arthur, and Peking; handbook for travellers. Sure, that worked…
Sibulaküla (Sibulaküla)
Onion village. Named after the small plots of ‘farmland’ or allotments around the Kaasani orthodox church, many of which grew onions, or after the church’s typical onion-shaped dome. The church – completed in 1721, severely damaged during the March 1944 bombing, icons looted in the 1970s, and partially burnt down on the night of 2009-07-15 – remains the oldest surviving wooden church in Tallinn. Its cemetery was probably destroyed in the early 1770s along with others in Tallinn following the Moscow plague riots of 1771. See Mõigu.