WordNet: grille, lattice, wicket

small opening (like a window in a door) through which business can be transacted

• hypernym opening

grille

• (suomi) ristikkoikkuna (synonyymi; <unconfirmed/>)

lattice

• (suomi) ristikkoikkuna (synonyymi; <unconfirmed/>)

wicket

• (suomi) ristikkoikkuna (synonyymi; <unconfirmed/>)