@NicksWorld If you always want the number symbol and a series of words to be read hashtag rather than number, that's doable.
If your platform uses hashtags that start with a number, though, then that wouldn't follow the pattern and NVDA would still say number in those situations.

@NicksWorld you can with a regular expression in the dictionary to a point, if you have stricly-defined rules about how a hashtag should ever be written, I guess?

@NicksWorld The number sign is the hashtag, it's the same symbol. You could probably use a regular expression so it only calls it a hashtag if there are letters after it, but generally speaking the hash, number or pound sign (also called an octothorp by the way, is all just one symbol.

Not to be confused with pounds used in currency, as in £100, which we use in the UK. Those ones are different.