thumbnail moon
n.— «The moon, which is about 15 per cent illuminated, or more commonly called a “thumbnail moon,” is said to be a setting moon and will move rapidly through the night sky early on making its decent.» —“Venus and Jupiter to Align With Moon, Not Visible Again For Another 44 Years” by Nikki Weingartner Digital Journal (Toronto, Ontario, Canada) Dec. 1, 2008. (source: Double-Tongued Dictionary)
Further reading
When does late at night change to early in the morning? 2:30 a.m.? 3:00 a.m.? Another time? This is part of a complete episode. Transcript of “When Does Late Night Become Early Morn?” Listener Greg Johnson asked a question that I’ve been pondering...
As we’ve noted, in California’s Orange County, to birdie means “to drink from a bottle without touching it with one’s lips.” Elsewhere this germ-avoidant act is also called airsipping, airing, baby birding. In parts of the UK, you might sky a drink...