This is the 2555th most frequent German word.
weine
"Weine" means "wines" (plural of "der Wein") or "cry" (1st-person singular or imperative of "weinen").
Here, 'weine' is the first singular person present tense of the verb 'weinen', which means 'to cry'.
Ich weine, wenn ich traurige Filme sehe.
I cry when I watch sad movies.
In this case, 'weine' is used as an imperative form addressing the second person singular to give the command 'Do not cry'.
Weine nicht, es wird alles gut!
Don't cry, everything will be alright!
Here 'weine' is used incorrectly; the correct form should be 'weinten'. This demonstrates the typical error learners make in past tense conjugation.