Can anyone tell me the meaning of the following surname?

Question:

Can anyone tell me the meaning of the following surname?

Klimuszko

It came up in my research and it seems like a very rare name. I know it's Polish but I can't figure out the meaning. Any help would be appreciated. Thanks.

Best Answer - Chosen by Asker: the ancestor of this person was named Klim, which is not very common Cyrillic name.