Definify.com
Webster 1913 Edition
By-blow
By′-blowˊ
,Noun.
1.
A side or incidental blow; an accidental blow.
With their
by-blows
they did split the very stones in pieces. Bunyan.
2.
An illegitimate child; a bastard.
The Aga speedily . . . brought her [his disgraced slave] to court, together with her pretty
by-blow
, the present Padre Ottomano. Evelyn.