| SEAHOLLY | European coastal plant once thought to be an aphrodisiac |
| MANDRAKE | Plant with a humanlike root, once thought to be an aphrodisiac (8) |
| SOWBANE | Plant once thought to be toxic to pigs (7) |
| SELFHEAL | Plant once thought to have curative properties |
| MADWORT | Plant once thought to cure rabies |
| MILKVETCH | Plant once thought to boost dairy animals' yield (4,5) |
| OYSTERS | Shellfish that are eaten with champagne and said to be an aphrodisiac (7) |
| OYSTER | Mollusc said to be an aphrodisiac |
| PARSNIP | Vegetable considered to be an aphrodisiac in Roman times (7) |
| SEAKALE | European coastal plant, Crambe maritima, cultivated for its edible asparagus-like shoots |
| CHAR | Word thought to be an anglicisation of the Chinese or Indian name for tea that is used as an informal British name for the aforementioned beverage (4) |
| HYACINTH | From an old word for a blue gem thought to be an aquamarine or a sapphire, a larkspur that sprang from the blood of a lover of Apollo; a pink, purple, violet or white liliaceous spring flower; or, cin |
| TERRELLA | Meaning "little earth" and thought to be an invention of William Gilbert, a globe-shaped magnet designed to simulate Earth's magnetic fields (8) |
| THERAPSID | Extinct reptile thought to be an ancestor of mammals (9) |
| QUASAR | Extremely powerful, super-luminous nucleus thought to be an accretion disc swirling around a supermassive black hole at the centre of a distant galaxy (6) |
| SPONGE | Sessile marine animal, once thought to be a plant (6) |
| ELIXIR | Chemical preparation once thought to be able to prolong life (6) |
| REMORA | The sucking-fish, once thought to be a hindrance to shipping (6) |
| ALLIS | --- shad, a migratory fish of European coastal waters that travels up rivers to spawn (5) |
| ESPLANADE | Climbing mountains breaks East European coastal walk (9) |
