0 a name chosen by someone to use when he or she is involved in a particular activity, especially fighting in a war:
The "nom de guerre" was perhaps utilized to circumvent a technicality that only unsigned bands were eligible to participate in the competition.
In 1716 a "nom de guerre" was mandatory for every soldier; officers did not adopt "noms de guerre" as they considered them derogatory.
It is also used also as a pseudonym because of its meaning or as a "nom de guerre".
He was given the "nom de guerre" when young.
By extension, it may also have hypothetical or metaphorical references, e.g. in a "nom de guerre" or a nickname, without literally referring to a son or a daughter.