Rob’s Megaphone

INTERROBANG/ˈɪnˈtɛrəʊbæŋ/
A combined exclamation mark and question mark.
This punctuation mark is not yet standard, and probably never will be. It was invented in 1962 through the actions of Martin Speckter, head of a New York advertising agency. He felt that advertising people needed a mark that combined a question with a shout, that mixture any parent [...]

HA-HA/ˈhɑːhɑː/

A boundary to a park or garden that doesn’t interrupt the view.
You can still often see ha-has in the gardens of British stately homes. They usually consist of a sunken wall with its top at garden ground level, bounded with a ditch on the outer side. This stops cattle or sheep getting into the gardens [...]

GURNING
The pulling of grotesque faces.
This British term — much better known in Britain and Commonwealth countries than in the US — has at times been applied to the pulling of faces as a competitive activity. A surviving example is that in the Lake District, where the Egremont Crab-Apple Fair has an annual contest, which they [...]

DUMBLEDORE/ˈdʌmb(ə)ldɔə/

A type of bee
Not the Headmaster of Hogwarts, though J K Rowling must surely have borrowed his name from the insect. And a nicely echoic word it is, which evokes the drowsy hum of bees on summer afternoons.
Its first part is one of a set of rhyming words from English of some centuries ago, the [...]