In tennis, the term "15-love" represents the score when one player has won the first point of the game while their opponent has not scored any points. The term "love" is derived from the French word "l'oeuf," meaning egg, symbolizing zero. Thus, if the score is 15-0, it indicates that the server has won one point, while the receiver has yet to score. The scoring system in tennis is unique, characterized by its own specific terminologies and progression.