| SPIRITLEVEL | Device for setting horizontal surfaces containing liquid with an air bubble (6,5) |
| SPIRIT | ___ level, a glass tube of liquid with an air bubble in it to test horizontality (6) |
| CACODYL | Poisonous oily liquid with an unpleasant garlicky smell, composed of arsenic, carbon and hydrogen (7) |
| BILLLIGHTER | *Device for setting money on fire? |
| LEVEL | Instrument with an air bubble designed to determine a horizontal or plumb line; an area of flat farmland; or, a section of a video game (5) |
| VIAL | A miniature bottle or ampoule for liquid medicines; or, a small spirit-filled glass tube containing an air bubble that centralises when perfectly horizontal or plumb (4) |
| LOCK | Short section of a canal for raising or lowering a barge or narrowboat; or, an air-bubble in a pipe obstructing the flow of liquid (4) |
| EMBOLISM | Obstruction of an artery, typically by a blood clot or an air bubble (8) |
| BLISTER | Swelling containing an air bubble (7) |
| LUNG | An air bubble entering this organ can cause respiratory failure |
| OUTRIGGER | Oxford University device for setting off in a boat (9) |
| INKPOT | Vessel containing liquid for writing with (6) |
| LAUNCHER | Device for setting off a rocket (8) |
| CYST | An abnormal growth containing liquid or semi-solid matter (4) |
| BLADDERWRACK | A common brown seaweed with fronds containing air bubbles which give buoyancy |
| FUSES | Some of us espied devices for setting off explosions (5) |
| DUSTER | Cloth for cleaning horizontal surfaces |
| FERROUS | Iron-containing liquid, for sure (7) |
| AMPOULE | Glass vessel containing liquid for injections |
| SHELF | A support that consists of a horizontal surface for holding objects (5) |
