Definify.com
Webster 1913 Edition
Bo
Bo
,int
erj.
[Cf. W.
bw
, an interj. of threatening or frightening; n., terror, fear, dread.] An exclamation used to startle or frighten.
[Spelt also
boh
and boo
.] Webster 1828 Edition
Bo
BO
, exclam. A word of terror; a customary sound uttered by children to frighten their fellows.Definition 2024
bő
bő
See also: Appendix:Variations of "bo"