What is "attitudinise"

Usage examples of "attitudinise".

There are two who do not attitudinise--poor harried and insulted President Abrahamowicz, who seems wholly miserable, and can find no way to put in the dreary time but by swinging his bell and discharging occasional remarks which nobody can hear.

And here he sat, this Jadwin, quiet, in evening dress, listening good-naturedly to this beautiful music, for which he did not care, to this rant and fustian, watching quietly all this posing and attitudinising.