What is the meaning of Ost?

Obsolete form of oast.

cheese

east

east

past participle of ose

purchase

accusative singular of ostur

host, army

indefinite accusative singular of ostur

to smell (to perceive an odor)

to smell, to sniff (to inhale air through the nose, usually several times, in order to try to perceive a smell)

to smell (to sense, to find out)

to smell, to stink (to have, to spread a bad, unpleasant smell)

to smell (to have, to spread a pleasant odor)

to smell (to suggest, make think of something, usually unpleasant)

army

cheese

cheese

knot in a tree

army (armed military force)

east

sharp tip

house

bough, branch

east

east

cheese

east

east

Source: wiktionary.org