What does the cryptic crossword clue "Bowel in knots — that's drinking bender! (5)" mean?

The definition is "drinking bender!". The wordplay uses an anagram. anagram of BOWEL = ELBOW; definition: "drinking bender!" The answer is ELBOW.

Bowel in knots — that's drinking bender! (5)

Independent Cryptic #1682 | 24 Down | 2022-05-22 flower