| STRYCHNINE | Toxic crystalline alkaloid obtained from the seeds of the plant nux vomica, formerly used medically as a stimulant (10) |
| ANTIGENS | Toxic crystalline element occurring in metallic and non-metallic forms, chiefly obtained from the mineral stibnite (8) |
| THISTLEDOWN | Clock-like tuft of seeds of the plant used as the national emblem of Scotland; a favourite food of g |
| BLACKPEPPER | Seeds of the plant Piper nigrum, commonly ground or crushed and used as a spice (5,6) |
| LENTIL | Seeds of the plant Lens culinaris, used in soups, stews etc. (6) |
| QUININE | Bitter crystalline alkaloid obtained from cinchona bark, formerly widely used as an antimalarial drug (7) |
| RICIN | Highly toxic protein obtained from the seeds of the castor oil plant (5) |
| JOJOBA | Oil obtained from the seeds of the American plant Simmondsia chinensis, commonly used in cosmetics (6) |
| NUTMEG | Spice obtained from the seeds of the evergreen Indonesian tree Myristica fragrans, whose seed coverings produce mace (6) |
| SHEA | - butter; substance obtained from the seeds of an African tree, used for products including moisturiser and lip balm (4) |
| ATROPINE | Poisonous alkaloid obtained from solanaceous plants such as deadly nightshade, used in ophthalmology to dilate the pupil of the eye (8) |
| VANILLA | Ingredient derived from the seeds of the pods of a Mexican orchid, used to flavour custard, ice cream, poached pears, creme brulee, fudge and some sea bass dishes (7) |
| ANNATTO | A yellowish-red dye obtained from the seeds of a tropical American tree, used for colouring food and fabrics (7) |
| INULIN | Fructose polysaccharide obtained from the roots of elecampane and other composite plants, used medically to test kidney function (6) |
| KAPOK | Silky fibre obtained from the seed coverings of the ceiba tree (Ceiba pentandra), used for stuffing cushions etc. (5) |
| OPIUM | Analgesic and narcotic drug obtained from the seed capsules of the plant Papaver somniferum (5) |
| WHITEPEPPER | Seasoning creating by grinding the seed of the ripe fruit of Piper nigrum, with the thin, darker-coloured skin (flesh) of the fruit removed (5,6) |
| MACE | An aromatic spice ground from the covering of the seed of the nutmeg tree (4) |
| CODEINE | Alkaloid obtained from opium, used as an analgesic and sedative (7) |
| CAFFEINE | Crystalline alkaloid of the methylxanthine class responsible for the stimulant action of tea, coffee, cocoa etc. (8) |
