This is the 9140th most frequent German word.
lucas
The word "Lucas" is not inherently German; it is a proper noun, typically a name, and has no specific definition in German apart from being used as a personal name.
Used as a personal name identifying the subject performing the action.
Lucas spielt Klavier jeden Morgen.
Lucas plays the piano every morning.
Used as a personal name referring to a specific individual whom the speaker encountered.
Ich habe Lucas gestern im Park getroffen.
I met Lucas in the park yesterday.
Used as a personal name describing the individual who will engage in the forthcoming event.