The name of the castle () is a compound from Middle High German lieht 'light, bright' + egge 'hill, peak', thus meaning 'castle on a bright/sunny hill'. The Slovene change of the ending from -negg to -nik is an example of folk etymology based on analogy with many other toponyms ending in -nik.
The castle's name is derived from Middle High German words "lieht" meaning 'light, bright' and "egge" meaning 'hill, peak', signifying a 'castle situated on a sunny hill'. The Slovene change of the ending from -negg to -nik reflects a common folk etymology pattern based on analogy with other place names ending in -nik.