As a unit of time (60 seconds):
* मिनट (minat) is the most common word.
As a small amount or detail:
* क्षण (kshan)
* पल (pal)
* छोटा (chhota)
* सूक्ष्म (sookshm)
The best translation will depend on the specific context and the nuance you want to convey.