eco-roof

eco-roof
 n.— «The eco-roof is a roof that is planted in cactus and other water-retaining vegetation. » —“‘Sustainability’ is the key” by Art Chenoweth Daily Vanguard (Portland State Univ. (Ore.)) Apr. 27, 2004. (source: Double-Tongued Dictionary)

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Further reading

Blessing Box (episode #1613)

Is there such a thing as a “neutral” accent, and if so what does it sound like? And that quirk in the way southern Californians talk about freeways. They’ll say things like take the 405 and get on the 8. Why the definite article...