What does the cryptic crossword clue "Seeing they help girls, give them a good start (7)" mean?

The wordplay uses a charade (building blocks). G (synonym="good") + LASSES (synonym="girls") = GLASSES The answer is GLASSES.

Seeing they help girls, give them a good start (7)

Guardian Cryptic #29609 | 5 Across | 2025-02-04 flower