a word, phrase or idiom characteristic of or appropriate to ordinary or familiar conversation rather than formal speech or writing; informal speech.a word, phrase or idiom characteristic of or appropriate to ordinary or familiar conversation rather than formal speech or writing.a word, phrase or idiom characteristic of or appropriate to ordinary or familiar conversation rather than formal speech or writing; informal speech. You would rather have "Hold your body on earth." You're going to shoot the moon, in other words. (Colloquialism, meaning going all out, of course.) -Group ProcessingHold It on Earth (5 July 1957)