You're welcome Carol. Since only your ancestors arrived from that location, which they clearly have it written on the arrival manifest and Kovno after than I take it as not written correctly by a shipping clerk. It might really be almost correct spelling of a town in Kovno gubernia but I'm not familiar with it.
You NEED to find the ancestor's church marriage record, if married in US, children's church baptismal RECORD, naturalization intent and petition as well as SS-5Form [social security numbers] to give you a better spelling of a place of birth. No way to proceed with the research without a precise location.