As a noun bo
is old manservant.
As a proper noun zo is
an indigenous people of burma.
bo
English
Etymology 1
Imitative.
Alternative forms
* boh
* boo
Interjection
(
en interjection)
An exclamation used to startle or frighten.
* , II.37:
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Etymology 2
Probably a shortening of (m).
Noun
(US, slang) Fellow, chap, boy.
* 1940 , (Raymond Chandler), Farewell, My Lovely , Penguin 2010, p. 255:
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Etymology 3
From (etyl) ).
Noun
(
en noun)
(label) A quarterstaff, especially in an oriental context.