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.
Definition of quack. 1  1 : charlatan 2 Religious quacks on radio and television thinking up new ways to take money from ignorant listeners and incidentally from legitimate churches. â Andrew A. Rooney.