Noun
A sorry fellow; a worthless person; a rogue.
Any one of several aquatic, wed-footed, northern birds of the genus Urinator (formerly Colymbus), noted for their expertness in diving and swimming under water. The common loon, or great northern diver (Urinator imber, or Colymbus torquatus), and the red-throated loon or diver (U. septentrionalis), are the best known species. See Diver.
Source: Webster's dictionaryI was no more eccentric than your average raving loon. George Alec Effinger
Solitude never hurt anyone. Emily Dickinson lived alone, and she wrote some of the most beautiful poetry the world has ever known... then went crazy as a loon." Lisa Simpson. Matt Groening
You make me laugh like a loon on loon tablets! Louise Rennison
Although Big Bear 's forces managed to hold out until the Battle of Loon Lake on 3 June, citation the rebellion was a dismal failure for Métis and Natives alike, as they surrendered or fled. Source: Internet
Donations to The Little Egg Foundation support peregrine research and conservation in Maine, as do the chickadee tax checkoff, the loon license plate and the Maine Birder Band. Source: Internet
Arriving at the lake, I watch the local loon pair with their young chick. Source: Internet