bird egg
n.— «According to police reports, at about 10 am yesterday, police and a groundsman pulled out six boxes and several bags containing the firecrackers commonly known as “bird eggs” or “cherry bombs” from the school dumpster.» —“Cops seize 10,000 ‘cherry bombs'” by Sascha Mohammed Newsday (Trinidad and Tobago) Oct. 24, 2006. (source: Double-Tongued Dictionary)
Further reading
Jill from Greenville, South Carolina, wants to know why pickle automatically means “pickled cucumber,” as opposed to other pickled vegetables, such as onions and carrots. The answer has to do with prototypicality, the cultural agreement that one...
A firefighter named Steve in Newport News, Virginia, wonders why in his line of work, and for some police, certain additional kinds of days off after long unbroken shifts are called Kelly days, Kelly shifts, or Kelly time. The term most likely comes...