This is the 14211th most frequent German word.
halbe
"Halbe" means "half" in English.
Here, 'halbe' is used as an adjective to describe 'Stunde' (hour), indicating half of the hour.
Ich habe eine halbe Stunde gewartet.
I waited for half an hour.
Here, 'halbe' is used as an adjective to describe 'Wahrheit' (truth), indicating that what is stated is only a portion of the entire truth.
Das ist nur die halbe Wahrheit.
This is only half the truth.
Here, 'halbe' is used as an adjective to describe 'Flasche' (bottle), indicating that only half of the bottle was consumed.