hump
US /hʌmp/
UK /hʌmp/

1.
a rounded protuberance on the back of a camel or other animal, or on a person's back
:
•
The camel carried its load on its hump.
•
He had a slight hump on his back from an old injury.
2.
a difficult or unpleasant period of time or obstacle
:
•
Once we get over this financial hump, things will be easier.
•
Getting through the first week of the new job is always the biggest hump.