Thanks, Quisling, that makes sense. I thought the first word was definition, could just about stretch it to either of the options which fitted the crossers. Then saw the reminder of the 3-letter "beak", "looking over" ... and then ground to a halt. All is now clear, thanks!
And not long now until tomorrow's (the prize is my one Crossword in the week) ... but with my daily fix of Redactle to tackle first, in 18 minutes' time!