If you can, you should lick your elbow again.
This is the adverb version of 再, so it shares the meaning again and also has the meaning once again.
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you: Once again, you put a footer in your note because you can't remember the reading to this word because the mnemonic is so bad (sorry!).