What does the cryptic crossword clue "‘Rubbish Tip’ drawing, perhaps owned by student (7,3)" mean?

The wordplay uses an anagram. anagram of TIP (synonym="Rubbish") + DRAWING (synonym="DRAWING") = WRITINGPAD The answer is WRITINGPAD.

‘Rubbish Tip’ drawing, perhaps owned by student (7,3)

Guardian Cryptic #29529 | 15 Down | 2024-11-01 flower