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or pet·a·sus  (pĕt′ə-səs)
1. A wide-brimmed hat worn by ancient Greeks and Romans.
2. Greek Mythology The winged hat of Hermes.

[Greek; see petə- in Indo-European roots.]
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.


(ˈpɛtəsəs) or


(Historical Terms) a broad-brimmed hat worn by the ancient Greeks, such as one with wings on either side as traditionally worn by Mercury
[C16: via Latin from Greek petasos]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpɛt ə səs)

n., pl. -sus•es.
a broad-brimmed hat worn by ancient Greeks, often represented as a winged hat worn by Hermes.
[1590–1600; < Latin < Greek pétasos, akin to petannýnai to spread out]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Crews competing on yachts Jengu, Dusty P, Galahad of Cowes and Petasus will be among a record-breaking 400-boat fleet and all will be competing on the same race course as some of the world's best sailors.
I rode my first winner over hurdles there for Aidan O'Brien on a horse called Petasus in 1997.
O deus tem asas no seu gorro ou petasus, e algumas vezes nos pes, para mostrar a ligeireza de seu andar e a rapidez com que executa as ordens.