Sentence:  "Come on, we got some <WSD>bucket heads</WSD> to kill," Andrew said. Marc whispered, "<WSD>Bucket heads</WSD>?" "You know," Aaron said, "Storm troopers, bad guys with guns." 
Meaning of the word marked with <WSD> tags:  One who wears a bucket, or a bucket-like object (such as a helmet) on their head.