Where does “schleichn” come from?

schleichn (Bavarian) comes from Old High German slīhhan, from Proto-West Germanic *slīkan, from Proto-Germanic slīkaną, from Proto-Indo-European sleyǵ- — to glide, smooth, spread; to smear; to creep; to...

schleichn (Bavarian): to move in a quiet and inconspicuous manner, hence often slowly and/or ducked: to crawl, to sneak, to steal, to prowl, to creep, to slither (of a snake)