chew the (one's) cud 관용구
Chew the cud
If you chew the cud, you think carefully about something.
take up the cudgels for|cudgel|cudgels|take|take u
v. phr.,
literary To come to the defense of; to support or fight for.
He was the first to take up the cudgels for his friend. Compare: STAND UP FOR.
cud
cud chew the cud to recall and think over something; ruminate; ponder
cudgel
cudgel 1.
cudgel one's brains to think hard
2.
take up the cudgels (for) to come to the defense (of)
cudgel one's brains
cudgel one's brains see
rack one's brain.