Karjamaa (Karjamaa) 
Pasture, grazing-land, as once it was.
Karjavälja (Karjaväli)
Farm name. Lit. cattle field, cow pasture, etc. Another street of same name used to exist about 1.5 km to the west. See Välja.
Kärje (Kärg):
Honeycomb. Kärgkonn, Pipa pipa, the Surinam toad (actually a frog) of extraordinary reproductive strategy owes its name to the pits that develop on the female’s back due to its particular form or mating and out of which baby frogs emerge.
Karsti (Karst)
Karst. Thus named due to the existence of karst. Close to Lehtri. (While you’re here, check out the Kostivere karstiala (Kostivere Karst Area).