toptask
nounUK /ˈtɒp.tɑːsk/
US /ˈtɑːp.tæsk/
The most important job you need to do first.
Finishing my homework is my toptask before I can play.
OTHER MEANINGS
2. The hardest thing on a list of things to do.
Cleaning the garage was the toptask of the weekend.
3. The job a leader cares about most.
Keeping everyone safe is the captain's toptask.
4. The first thing on a plan or schedule.
Our toptask today is to buy the tickets.