What does the cryptic crossword clue "Surface — the last labelled on an icosahedron? (5)" mean?

The definition is "Surface". The wordplay uses a hidden word. Hidden in "surFACE — The last labelled on an icosahedron?" The answer is FACET.

Surface — the last labelled on an icosahedron? (5)

Times Cryptic #29009 | 1 Down | 2024-08-30 flower