A straddle is any set of offsetting positions on personal property. One example, is a put and call option on the same number of shares of a particular security, with the same exercise price and expiration date.
Definition of flack for English Language Learners. : a person whose job is to make people like or be interested in someone or something.
The definition of a quack is the sound a duck makes, or a person who claims to have a specific skilled that he does not have. An example of a quack is what you'll likely hear at a duck park. An example of a quack is a fake doctor. Quack is defined as to make the noise of a duck.