| KEEL | Central beam of the ship |
| RIDGEPOLE | Roof's central beam supporting the rafters (9) |
| LASER | A device that generates intense beam of radiation in the infrared, visible, or ultraviolet region of the electromagnetic spectrum |
| DIMMERSWITCH | A device in a vehicle which turns off the full beam of a headlamp and turns on the low beam (6,6) |
| PEEL | Beam of a ship's hull; or, formerly, the boat of a Newcastle collier (4) |
| RAY | Word for a line of light or beam of sunshine, thus a glimmer of hope or a gleam of intellectual illumination (3) |
| DELIGHT | Get rid of the beam of pleasure? (7) |
| BEAN | Rowan Atkinson arrives in a beam of light at the start of each episode (Mr ----) |
| PENCIL | An artist's fine paintbrush or individual style in drawing; a stick of graphite or kohl; a narrow beam of light; or, an aggregate of lines or rays, converging to a point (6) |
| RADIO | From a word for a beam of light, electromagnetic communication for which Marconi and Tesla were pioneers; a wireless; or, the industry of broadcasting sound (5) |
| SPECTRUM | Word for the band of colours into which a beam of white light is decomposed, as seen in a rainbow; hence any array, range or scale (8) |
| CROSSBAR | A horizontal piece, such as a top tube of a bike, a top beam of a goal or a colourful pole of a showjump (8) |
| SHAFT | Beam of light down the mine-passage |
| GIBBET | The projecting beam of a crane (6) |
| YARDARM | Wild beam of light rebounding around King's place of execution (7) |
| RETINOSCOPE | Ophthalmologist's instrument that reflects a beam of light from a mirror into the eye (11) |
| STRAYING | Musician goes round narrow beam of light that's out of place? (8) |
| IBAR | Beam of support |
| GLEAM | Small beam of light |
| TRANSOM | Beam of light ran somewhere within (7) |
