From Wiktionary, the free dictionary
From üli- + -iči.
üliči
- over, across [with inessive]
- Zajceva, N. G., Mullonen, M. I. (2007) “через”, in Uz’ venä-vepsläine vajehnik / Novyj russko-vepsskij slovarʹ [New Russian–Veps Dictionary][1], Petrozavodsk: Periodika