Definition
to become someone's responsibility or duty
Since he was absent, the important task fell to me.
The completion of the project will ultimately fall to the management team.
With the implementation of the new policy, the added responsibilities will fall to each member.
it is your responsibility
The preparation for this speech falls entirely to you.
When issues arise, the final responsibility will fall to you.
Ensuring the success of this project is a shared responsibility, but the primary duty falls on your shoulders.