It could be a dialect word and unfamiliar to people in certain parts of the UK. I know there are dialect words in the US that a lot of Americans aren't familiar with.
ETA: For example of the latter, I've read about the phrase "to redd up" which is used in Pennsylvania and came with Scotch and English immigrants. It means to clean or to clear up, such as clearing the dinner table. I've never heard it spoken by anyone and I'm willing to bet a lot of Americans outside of that region have never heard of it. My father grew up in Philadelphia and was familiar with it, but my mother, who grew up in New Jersey, had never heard of it.