Where does “hrádok” come from?

hrádok (Slovak) comes from Slovak hrad, from Proto-Slavic gȏrdъ, from Proto-Balto-Slavic gardas, from Proto-Indo-European gʰerdʰ- — to enclose, to encircle; enclosure, fence, belt.

Ancestry of “hrádok”, step by step

StepLanguageWordMeaning
1Slovakhradcastle
2Proto-Slavicgȏrdъfortified settlement
3Proto-Balto-Slavicgardasenclosure
4Proto-Indo-Europeangʰerdʰ-to enclose, to encircle; enclosure, fence, belt
Every word from Proto-Indo-European gʰerdʰ- →Every word from Proto-Balto-Slavic gardas →Every word from Proto-Slavic gȏrdъ →