Prosses is a 7 letter English word. It's valid Words with friends word worth 10 points.
You can make 111 anagrams from letters in prosses (eoprsss).
perhaps Scots variant, in v. use, of prowess
However, father and daughter did at last appear, and Miss pross was ready at the street door to receive them.
The savage Frenchwoman tried to tear her away, but Miss pross seized her around the waist, and held her back.
But, Miss pross suddenly became afflicted with a twitching in the head and body, and retired into the house.
Miss pross, submitting herself to his judgment, the scheme was worked out with care.
It was the close of the summer day, and he knew Lucie to be out with Miss pross.
No sooner did he face her, than Miss pross uttered a scream, and clapped her hands.
Within a few minutes, Miss pross stood whispering at his side.
Something of this is implied in the slang word pross, since it also means “to sponge upon a comrade,” &c., “for drink.”
It was in vain for Mr. Cruncher to repeat what he said; Miss pross could not hear him.
They were only three at table, and Miss pross made the third.