Definition of "wo"
interjection:
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A falconer's call to a hawk.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
A call to cause a horse to slow down or stop; whoa.
from Wiktionary, Creative Commons Attribution/Share-Alike License
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noun:
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Obsolete spelling of woe.
from Wiktionary, Creative Commons Attribution/Share-Alike License
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