Sentence:  One of my favourites is '<!-- --><WSD>greenout</WSD><!-- -->', for which I only found a single quotation, which is the experience you have when you've been in Antarctica which has very little vegetation, no trees or shrubs, not many smells of the vegetation, and you come back after weeks, months or a year or more to a vegetated place and the warm air is blowing off the continent that you're coming towards and you have a '<!-- --><WSD>greenout</WSD><!-- -->' - you're overwhelmed by the sensations. 
Meaning of the word marked with <WSD> tags:  The sensation caused by seeing plants again after a period in Antarctica.