Question Author
It's a weird one that, naomi, in that you don't believe it when you've got it. If your answer means 'an entire number' and is an everyday expression in the form T-- - L-- -, then you have it. A modern Chambers will confirm it as a group of horses trotted out for exercise, but some older Chambers don't have it.
As to my bowing out from R&S, I won't hi-jack this site to explain. It's really not important, but if you want to re-ask the question on R&S I'd be delighted to answer..