1
general::
Phrase(s): drain someone or something of something
Fig. to exhaust someone or something of something, such as energy, motivation, etc. • This day has drained me of all my motivation. • The first performance drained the cast of all its energy., Phrase(s): drain something of something
to empty something out of something. • He drained the glass of the remaining beer.
McGrawhill's American Idioms And Phrasal Verbs