An interjection used to express great joy. It most commonly used during pre-climaxes when masturbating. But, it is a great way to let the world know you are happy to be a man. It can be used as loudly, like the battle cry of a chronic chicken choker, or softly, like you would whisper to your nonexistent lover. One last use is when you know you are smarter than someone, but still feel challenged by them. You can gain the high ground by stroking your ego with a scream of BATE!
Noun. British public school slang. A state of anger or enragement. Derived from hawking terminology (hawking being the sport of training and flying raptors). See also the adjective 'batey'.