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n. Chiefly Northeastern US
A sky covered with many small cirrocumulus or altocumulus clouds, resembling the markings found on a mackerel. Also called regionally buttermilk sky.
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.
(Physical Geography) a sky patterned with cirrocumulus or small altocumulus clouds
[from the similarity to the pattern on a mackerel's back]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a sky marked by cirrocumulus or altocumulus clouds scattered like the markings on a mackerel's back.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
mackerel sky- One with rows of white fluffy clouds resembling the pattern on a mackerel's back.
See also related terms for rows.
Farlex Trivia Dictionary. © 2012 Farlex, Inc. All rights reserved.