What does the cryptic crossword clue "Girl with tandem, in travelling, providing a trip (4-8)" mean?

The wordplay uses an anagram. anagram of GIRL + TANDEM, + IN = MIND-ALTERING The answer is MIND-ALTERING.

Girl with tandem, in travelling, providing a trip (4-8)

Times Cryptic #29157 | 11 Down | 2025-02-19 flower