wild spinach

definition: leaves collected from the wild
example:
speech part: noun
synonyms: lamb's-quarter
definition: leafy greens collected from the wild and used as a substitute for spinach
example:
speech part: noun
synonyms:
definition: common weedy European plant introduced into North America
example:
speech part: noun
synonyms: pigweed
definition: European plant naturalized in North America
example:
speech part: noun
synonyms: good-king-henry allgood fat hen

How wild spinach is being used?