What is the meaning of Soursop?

A small tropical evergreen tree, Annona muricata.

The tart, spiny, yellow-green fruit of this tree.

(Can we verify this sense?) Bermuda buttercup (Oxalis pes-caprae), an edible wood sorrel native to South Africa

  1. any wood sorrel, especially when used as food

any wood sorrel, especially when used as food

Source: wiktionary.org