What does the cryptic crossword clue "Covering letter enclosing lock of hair (7)" mean?

The definition is "hair". The wordplay uses a hidden word. Hidden in "coveRING LETter enclosing lock of hair" The answer is RINGLET.

Covering letter enclosing lock of hair (7)

Independent Cryptic #1782 | 25 Across | 2024-04-21 flower