Loon

/luːn/

Meaning & Definition

noun
A large diving bird of the family Gaviidae, known for its distinctive calls and excellent swimming ability.
We spotted a loon gliding across the calm lake at dawn.
A foolish or crazy person.
Don't listen to him; he's just a loon with wild ideas.
A Canadian dollar or a colloquial term referring to the currency due to the image of a common loon on the one-dollar coin.
The price of gas has gone up to $1.50 per loon.

Etymology

From Middle English 'lone' or 'loun', from the Scottish variant of 'louna', which means 'a madman or simpleton'.

Common Phrases and Expressions

loon in the moon
A term referring to a peculiar or whimsical person.
as mad as a loon
Extremely crazy or eccentric.

Related Words

gull
A seabird of the family Laridae, often found near coastal areas.
merganser
A type of fish-eating duck from the genus Mergus.

Slang Meanings

A person who is considered to be eccentric or mentally unstable.
Ever since he started collecting those odd statues, they call him a loon.
Someone who acts in a foolish or wacky manner.
She's such a loon for trying to juggle while riding a unicycle.