Crossword clue: song released in 1994
2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
A plant (Sedum Telephium) with fleshy leaves, which has extreme powers of resisting drought; garden ox-pine.
something that should remain hidden from others (especially information that is not to be passed on)