What does the cryptic crossword clue "Work before tight epic is small part of larger problem? (3,2,3,7)" mean?

The wordplay uses an anagram. anagram of BEFORE + TIGHT + EPIC = TIPOFTHEICEBERG The answer is TIPOFTHEICEBERG.

Work before tight epic is small part of larger problem? (3,2,3,7)

Daily Mail Cryptic #17514 | 6 Down | 2024-12-19 flower