Portion.
Moist
Others are mostly Americanisms when they are used by non-American people who have English as their native language.
Mom
Vacation
Pinkie (LITTLE FINGER!)
And the American English euphemisms that have crept into everyday use in the last 15 years or so :
Bathroom - when it doesn't contain a bath but does contain a TOILET. Let's just call the room a TOILET, FFS
Restroom - see above
and I'm afraid I have to add 'passed' as in died.