What's an aerodrome when it's not an aerodrome?*

Sad news that Collins is ridding its dictionaries of words like succedaneum, woolfell and aerodrome.

But as we've said before (and will no doubt bang on about again), a language needs to move on to survive.

And if a word goes out of circulation, it's either because it's no longer necessary or because people have found another word that does its job.

*That sounds like the start of a bad joke, but it's a genuine question.