2. British , Informal
an alcoholic drink taken at sunset
3. US , Nautical ; Slang
an officer who is a strict disciplinarian
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'sundowner'
(sense 1) sundown
: from habitually arriving at a stock farm too late for work but early enough to receive
a night's lodging and food; (sense 3) from requiring return from shore leave by sundown