This is the 8917th most frequent German word.
langhe
It seems "langhe" is not a German word. Could you mean "lange"? If so, "lange" means "long" or "for a long time" in English.
In this context, 'lang' (lange in feminine form to match 'Woche') describes the duration of time as being extended.
Ich habe eine lange Woche hinter mir.
I have a long week behind me.
Here, 'lang' describes the physical extent of the street, indicating length.
Die Straße ist ziemlich lang.
The street is quite long.
In this example, 'lang' is used in combination with 'wie' to ask a question about the duration of the movie.