kolstvím
Kolstvím is a term that appears only infrequently in Czech-language texts and is not part of standard, widely accepted vocabulary. In available sources, it is treated as the instrumental singular form of a noun that itself is not clearly defined in contemporary Czech, making its precise meaning highly context-dependent. As a result, kolstvím does not have a fixed, universally recognized sense.
The word appears to be built from a base form resembling kolstvo plus the Czech instrumental suffix
Kolstvím is encountered only in a small number of specialized or historical discussions and is not used
Kolstvo (to the extent that it appears in sources) as the apparent base noun form, and related