What does the cryptic crossword clue "Feature of space station bearing feature of door? (7)" mean?

The wordplay uses a charade (building blocks). AIR (synonym="bearing") + LOCK (synonym="feature of door") = AIRLOCK The answer is AIRLOCK.

Feature of space station bearing feature of door? (7)

Guardian Cryptic #29340 | 5 Across | 2024-03-26 flower