canary:

They could have made a fortune just playing it straight, but that wasn't enough for them, said Gill. . . . The brothers ultimately pleaded guilty to federal charges of conspiracy and bank fraud.

[Philip] Hart is one of those rare men whose ego is smaller than his talents; and whose directness and sense of conscience have led others to regard him as the moral compass of the Senate.

When they were slacking off in the mine, for example, and a jefe arrived unexpectedly, they shouted loro (parrot) or fuego (fire) as warning signals.