API - application program interface. Related Terms. Application program interface (API) is a set of routines, protocols, and tools for building software applications. An API specifies how software components should interact. Additionally, APIs are used when programming graphical user interface (GUI) components. A good API makes it easier to develop a program by providing all the building blocks.
By Rowena Pedrena. A traditional golf set has 13 clubs: three woods, nine irons (including three wedges) and one putter. The USGA limits the number of clubs a player may carry in his or her bag to 14. A player may include an additional wedge or wood to a fill a gap in hitting distance.
Today, most golfers prefer 7 and 9 woods in their bag (which can only have fourteen clubs) than a 2 or 4 wood. In fact, there is now a trend to include higher numbered woods and eliminate the traditional low numbered irons in your set of golf clubs. That will be discussed in greater detail when we talk about irons.