Answer:
I mean goodbye for South Americans.
I am an instrument capable of making numerous sound but cannot be touched or seen.
I am the only word that looks the same when spelled upside down.
I start with T end with T and within me is T.
I am a protector of the scoreboard.
A word of five letters, Upside down is the same, A shark does this, But itβs not to blame. What is the word?