| LEADGLASS | A term for the heavy plumbeous "crystal" developed by George Ravenscroft in the 17th century (4,5) |
| GLASS | Material such as "lead crystal" developed by George Ravenscroft; a barometer, lens, mirror, tumbler or watch face; or, greenhouses and cold frames collectively (5) |
| SIB | Member of the fam hidden in "plumbeous ibis" |
| KINGSEVIL | A term for the disease scrofula once thought to be curable by a monarch's touch (5,4) |
| SALOPIANS | A term for the natives or inhabitants of the county of Shropshire (9) |
| SUMPSIMUS | Taken from a Latin prayer, a term for the correct equivalent of an incorrect but popular expression |
| CLARINETS | Single-reed instruments developed in the 17th century by adding two keys to the chalumeau, first used in a concerto by Mozart (9) |
| BUCCANEER | A pirate, especially one who preyed on the Spanish colonies and shipping in the Caribbean in the 17th Century (9) |
| LEAD | Metallic element "Pb", used by George Ravenscroft to prevent crizzling in the flint glass or "crystal" he developed in the 1670s (4) |
| SPEEDTRAP | Dangerous place for the heavy-footed |
| WIDEAWAKE | A broadbrimmed felt hat with a low crown adopted by Quakers in the 17th century (9) |
| ISLEOFELY | Historic part of Cambridgeshire that was only accessible by boat until the waterlogged Fens were drained in the 17th century (4,2,3) |
| ICEHOUSES | They started to be built by British wealthy homeowners in the 17th century to preserve foods and chill drinks throughout the year (3,6) |
| HALFCROWN | In the 17th century, Mary had this old money |
| RUMMAGERS | Outlaws in the 17th century (9) |
| RAPPAREES | Outlaws in the 17th century (9) |
| RICHELIEU | Cardinal ___, prime minister of France in the 17th century (9) |
| ETAGE | French word for a floor or storey; or, a term for the grouping of cloud height in meteorology (5) |
| AZALEA | "Royalty of the garden" flower's name, whose first two letters hint at a term for the alphabet or for a road map (6) |
| FLOWER | ___ people, a term for the young in the 1960s who rejected conventional social values (6) |
