Olevi (Olev)
Short for Olevipoeg, Olev’s son. According to Kreutzwald F.R., cousin and fighting companion of the epic hero Kalevipoeg, Kalev’s son (see Kalevipoja), or, possibly, rhyming variant of Kalev’s name (but see Oleviste and Olevimägi). Part of a Kalevipoeg street-name group. See also Sulevi. There is another Kalevipoeg-themed street group in Kalamaja, see Kalevi or Linda.
Õnne (Õnn)
Luck, fortune, happiness – Palju õnne: lit. much happiness: Congratulations! or Happy Birthday! accordingly, the full version of the latter being Palju õnne sünnipäevaks. Name changed to Selja during the unhappy days of 1940-1941.
Öölase (Öölane)
Noctuid owlet moth (numerous species). Part of a lepidopteran group. Lit. night-time being. See Kannustiiva.
Orase (Oras)
Young crop, first shoots of grain. Part of a fodder and staples street-name group. See Pebre.