detach : Idioms & Phrases
detached house
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noun a house that stands alone
single dwelling.
WordNet
detached retina
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noun visual impairment resulting from the retina becoming separated from the choroid in the back of the eye; treated by photocoagulation
retinal detachment; detachment of the retina.
WordNet
semi-detached house
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noun a dwelling that is attached to something on only one side