natláčiti to stuff (v into), to stuff up; to cram; to squeeze
natláčiti si pipo to fill one's pipe
natláčiti ljudi v avtobus to pack the bus with people
preveč natláčiti z to cram with
natlačen packed, squeezed, chockfull, filled chock-a-block
bili smo strašno natlačeni v avtobusu we were tightly packed (ali packed like sardines) in the bus