Verb
(transitive) To remove or acquire by plucking from, for example, the ground; to pick up.
(intransitive) To become more cheerful.
(transitive) To summon positive emotion (especially courage); to muster.
Synonyms: muster up, summon up, work up
Pluck up your hearts, since fate still rests our friend. Christopher Marlowe
Come, pluck up a good heart; speak the truth and shame the devil. François Rabelais