This is the 444th most frequent Hebrew word.
למען
"For the sake of" or "so that."
The word 'למען' here means 'for the sake of', indicating the purpose or goal of the action.
אני עובד קשה למען משפחתי.
I work hard for the sake of my family.
In this sentence, 'למען' signifies a forward-looking purpose related to benefitting future entities.
עלינו לשמור על הטבע למען הדורות הבאים.
We must protect nature for the sake of future generations.
Here, 'למען' conveys the directed intent of the action towards benefitting a group or collective.