[plume
oneself]{v. phr.}, {literary} Гордиться собой; хвастаться, кичиться.
/He plumed himself on having the belle of
the ball as his date./ /He plumed himself on his successful
planning in the election./ /She plumed herself on the grace with
which she sat on a horse./ Cр.: [PRIDE
ONESELF].