"Spunk" is a common slang for ejaculate in the United States, as well, although it's also used by the dictionary definition, and nobody seems to get it mixed up. I doubt you'll find any American over the age of 8 and under the age of 60 who doesn't know that spunk means ejaculate when used in a slang sense.

We are reaching the point, though, where it's becoming more and more difficult to use spunk by the dictionary definition, because at the first mention of the word, the nearest person with the mentality of a 13-year-old or less will shout "HAH HAH HAH U R TALKING ABOUT SEMUN HAH HAH HAH!!!" (Don't worry about how they actully manage to SAY "U R"... they just do.

Sometimes good for a laugh. In Wing Commander 4, the writers obviously must have been smoking crack when they wrote the following line for Captain Eisen, commenting on Colonel Blair's enthusiasm:

"God, I love that boy's spunk."