Definition of "smoothen" []

• To make or become smooth. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "If my original photo is too grainy due to poor lighting, I reduce the noise aka smoothen my skin."
• "The External Affairs Minister also made it clear that anti-India tirade by Hafeez Saeed and other Jihadi leaders would not not "smoothen" Indo-Pak ties."
• "The Reserve Bank of India, which says foreign exchange rates should move in coordination with a country's economic fundamentals to keep tensions in global currency markets in check, traditionally intervenes only to smoothen excessive volatility as its foreign exchange management strategy."