skleníkový (Czech) comes from Czech skleník, from Czech sklený, from Czech sklo, from Old Czech stklo, from Proto-Slavic stьklo, from Gothic 𐍃𐍄𐌹𐌺𐌻𐍃, from Proto-Germanic stiklaz, from Proto-Germanic stikiz — to be sharp; to sting.
skleníkový (Czech): greenhouse