esky canary 

The first fruit or vegetable that begins to go off in an esky, most commonly a piece of broccoli. With a piece of broccoli, this becomes apparent as it begins to go yellow and limp. It signifies the short-lived future and imminent demise of the other perishable items within the esky, much as the death of a canary in the mines warns the miners that immediate action must be taken if they wish to live.

Ah shit, the esky canary is going yellow! Better finish off those vegies before it's too late.

esky canary by ~Çŭnning-Liñgüist~ March 3, 2011

sang like a canary 

when a person tells everything they know about a crime or wrongdoing to the police or the authorities.

after he robbed the bank, the police caught him and brought him in for question. after a couple hours of questioning he sang like a canary.

sang like a canary by anonymouskid411 February 24, 2009

Cat that ate the canary 

Used to describe the look on someone’s face when they are satasfied with something they’ve done, said, or experienced...

Person One: *Finishes Puzle*
Person Two: Well don’t you look like the cat that ate the canary...

Cat that ate the canary by TheCrunchy October 18, 2018

the canary 

Someone that you let go first to make sure it is safe. Used sometimes by video-gamers. For instance, when the canary gets killed, springs the trap, takes the fall etc, it will tell you where the dangers/enemies are. Origin: coal miners used to keep a canary in the mine, when it died they knew there was poison gas.

Looks dangerous in there, let the canary go first.

the canary by author December 9, 2008

slap a canary on it 

to put a yellow sticker on a windshield of a car to indicate that the car is unroadworthy. Australian English only

This car is a real disgrace. I really have no choice but to "slap a canary on it".

slap a canary on it by Aussieq April 6, 2010

let your caged canary sing 

express your inner creativity in productive ways, without caring too much about what others think of your

music, art and culture are all about having to let your caged canary sing freely

let your caged canary sing by Uncle Dimma February 13, 2015

sea canary 

The lone sperm that fertilizes a woman's egg and has a mating call much like that of the canary.

Phil's sea canary led to Debra's positive pregnancy test.

sea canary by Gare-Bear, Fill, ZD January 20, 2014