Friendship fruit is the term given to

Friendship fruit is the term given to Pineapple.
Pineapple is a symbol of hospitality, prosperity, friendship and diplomacy. The Pineapple across Continents has come to mean sharing, caring and friendship, and is the symbol of hospitality.
The strange-looking fruit was once popular as an architectural feature on buildings and in sculptures and its connection to travel, hospitality and luxury is probably related to Christopher Columbus.