garbologist /gär-bolˈə-jist/ (US)

1. A dustman, garbage-collector (facetious)
2. Someone who studies a society's waste materials in order to make deductions about the lifestyles of its people

• grey-goose shaft
• grey-goose shafts
• grey-goose wing
• grey-goose wings
• grey-haired
• grey-headed
• greyhen
• greyhens
• greyhound
• greyhounds
• greying
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• grey knight
• grey knights
• greylag
• greylag geese
• greylag goose
• greylags
• grey literature
• greyly
• grey mare
• grey market
• grey markets
• grey matter