What is the meaning of Kalka?

to lime, limewash

to calcify

to lose one’s memory or mental acuity, as due to age; to become senile

trample

ram, press

cargo; load

onionskin, tracing paper

carbon paper

carbonless copy paper

calque

to lime (treat with lime (calcium hydroxide (kalciumhydroxid) or calcium oxide (kalciumoxid)), especially to reduce acidity)

to lime (apply limewash (to something))

third-person singular optative of kalkmak

Source: wiktionary.org