| DIPPER | It's used to prevent dazzling the water-ouzel (6) |
| WEDGE | It's used to prevent movement on the western border (5) |
| AUTUMNLEAVES | Soon they'll be dazzling the trees: 2 wds. |
| MERLOT | From French patois for "little blackbird", a Bordeaux grape variety, named for its resemblance to the blue-black colour of said ouzel (6) |
| MUZZLE | Used to prevent dog biting the end of the gun? (6) |
| HOOPOE | Bird having ring ouzel's head and eagle's tail (6) |
| WASHER | Flat ring used to prevent leakage at a joint (6) |
| GROYNE | Structure used to prevent coastal erosion (6) |
| POUNCE | A talon of a hawk; a sudden spring or swoop; fine powder of cuttle-bone or sandarach, formerly used to prevent ink from bleeding; or, charcoal dust sprinkled through perforated designs to transfer mot |
| EPIPEN | Device used to prevent anaphylactic shock |
| AXSEED | Plant used to prevent erosion on banked roadsides |
| DIPPERS | Ladles; snacks such as goujons for dunking in a sauce; water ouzels, the world's only aquatic songbirds; or, assistants historically employed to help bathers in and out of the sea |
| PIET | Water ouzel |
| LOVAT | Rising in the Chiltern Hills, another name for the River Ouzel; or, a muted green colour used for Scottish tweed, moleskins, kilt socks and country knits (5) |
| BLACKBIRD | An ouzel or merle esteemed for its mellow song; or, the title of a 1968 song by the "Fab Four" (9) |
| PINKINGSHEARS | Scissors used to prevent fraying (7,6) |
| ANTICOAGULANT | Medication used to prevent the formation of blood clots (13) |
| INSULATION | Material used to prevent the passing of heat (10) |
| WARFARIN | Anticoagulant commonly used to prevent blood clots in the circulatory system (8) |
| CHOCK | Block of wood used to prevent the sliding or rolling of a heavy object (5) |