0 to gradually stop or disappear:
The fighting which started in the night had petered out by morning.
The track petered out after a mile or so.
1 to be reduced gradually so that nothing is left:
We thought the storm would peter out.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
NEW WORDS
European
May 10, 2021
WORD OF THE DAY
Shimmer
peter out