mole-groomer should not be confused with the similar-sounding word mole-gloomer, a kind of new wave exterminator who attempts to rid an area of moles by reading depressing Kafka stories over appropriately located loudspeakers, until the burrowing pests get so depressed that they flee to another location.
Obviously, a mule-groomer is also a different kind of beast altogether.
a person who encourages others (who are in possession of privileged information) to divulge whatever they may know and is to the public good, in other words, someone who encourages others to spill the beans.
Correction: obviously 'Ponsonby-ffinch-smythe' in that last post should have read 'pcholmondely-bassington-smollet-ffffeatherstonehaugh-smythe'*. The error is attributable to besotted morse code operators.
I ssay, Nigel old chap. When you've finished with the mole-grooming, perhaps you could walk young Ponsonby-ffinch-smythe over to the yak-shaving department. Then he has his trilby-fitting appointment at five.