naslanjati

1. (naslanjati se na + acc.) to lean on; to lean against
   Ne naslanjaj se na vrata, otvoriće se. — Don't lean on the door, it will open.
   Stalno se naslanja na sto dok priča. — He keeps leaning on the table while he talks.
2. (something against something) to lean
   Komšija uvek naslanja bicikl na naš zid. — Our neighbour always leans his bike against our wall.
3. (naslanjati se na + acc.) to build on; to draw on
   Novi zakon se naslanja na evropske propise. — The new law builds on European regulations.
4. (of buildings, plots) to adjoin; to border on
   Dvorište se naslanja na park. — The yard borders on the park.

The construction is naslanjati (se) na + acc.