well I really am not sure, but
rimfired?
Sorry, but rimfired isn't the word I'm looking for. Please continue from RIMFIRE.
Well, I don't know why one who ramifies can't be a "ramifier" -- especially since m-w recognizes that one who ratifies is a "ratifier" -- but m-w doesn't recognize it, so (having concluded my obligatory whine about m-w's inconsistency), I'll move things along with:
rimfires
There are at least two words that can follow CALASH.
challahs
(same thing, different spelling. Does that count?)
Oh are we allowed proper nouns?
There's a place called Osborne where Queen Victoria lived on the Isle of Wight.. OK?
We're allowed proper names if in the Merriam-Webster Dictionary. Anything beyond that, I don't know!
Looks like Osborne is there (British Dramatist)