Whittle down(phrasal verb)
To reduce the number of people or things, or the size of something,
Hindi meaning:धीरे - धीरे कम करना
Synonyms: reduce, cut down, decrease, diminish, curtail, abbreviate
Antonyms: increase, lengthen, expand, maximize, augment, escalate
Example: We need to whittle down the list of guests for the party.
Trick to remember: Class me settle down hote hai whittle down hote hai. 
