I eventually got 42D & am now reduced to 1 viz -
8D - Herbicide used up in Kindergarten or uni lawns (4, 3)
L?N?R?N
The answer offered by Danword seems more likely to be 1 word, rather than 2. I favour LONG RUN as this is 2 words, but am open to correction.
Any better ideas?
PS Why does this Forum employ an American spellchecker?????