This is the 9752nd most frequent Turkish word.
arpa
Barley.
Here, 'arpa' refers to 'barley,' a type of grain, and is used to indicate the crop subject of the sentence.
Arpa tarlasında çalışmak çok zordur.
Working in the barley field is very challenging.
In this sentence, 'arpa' again means 'barley,' referring to the ingredient added to the food.
Yemeğin içine biraz arpa ekledim.
I added some barley into the dish.
Here, 'arpa' is used within 'arpa kahvesi,' meaning 'barley coffee,' which refers to coffee-like beverages made from roasted barley.