laughline
laugh·line
or laugh line (lăf′līn′, läf′-)n.
1. A lasting wrinkle formed at the outer corner of the eye or along the side of the mouth, especially noticeable when one laughs or smiles.
2. A line of dialogue intended to cause laughter: "actors who are directed ... to cutely underline every nuance and laughline" (Laurie Winer).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
laughline
(ˈlɑːflaɪn)n
a wrinkle near the outer corner of the eye, as if left from smiling or laughing
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014