Letters that make by-blow
o, b, l, w, y are letters that make 'by-blow'
1 possible definitions for 'by-blow'
Under this definition, by-blow is a noun and has the following properties:
love child, illegitimate child, illegitimate, whoreson, bastard have the same meaning as 'by-blow'
bastardly, spurious, bastardize, bastardise, misbegot, misbegotten are derivatives of 'by-blow'.