Märtsikellukese (Märtsikellukene)
Snowflake, aka snowbell and dewdrop (Leucojum spp.). Lit. little March bell. Not to be confused with the snowdrop, Galanthus nivalis or harilik lumikelluke (see Lumikellukese). Longest single-word streetname ex aequo with Vabaõhumuuseumi, 15 letters.