What does the cryptic crossword clue "Ship’s biscuit in tricky way (4,4)" mean?

The wordplay uses a charade (building blocks). HARD (synonym=""tricky"") + TACK (synonym=""way"") = HARDTACK The answer is HARDTACK.

Ship’s biscuit in tricky way (4,4)

Guardian Cryptic #29365 | 14 Across | 2024-04-24 flower