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 name of the castle is derived from Middle High German "lieht" meaning 'light, bright' combined with "egge" meaning 'hill, peak', thus signifying a 'castle on a bright/sunny hill'. The Slovene alteration of the ending from -negg to -nik reflects folk etymology based on analogy with numerous other place names ending in -nik.