Thrilling ride: at first boy and I gripped frantically

• Roller-coaster, British one, gripped frantically

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ The descent, like a big dipper , is exhilarating but perfectly safe.

Wikipedia Word definitions in Wikipedia
The Big Dipper was a wooden roller coaster located at Battersea Park in London, opened in 1951 and was one of the Battersea Park Funfair's biggest attractions. The ride was the main attraction of the funfair, opened as part of the Festival of Britain .

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
American English name for the seven-star asterism (known in England as the plough ; see Charles's Wain ) in the constellation Ursa Major , first attested 1833 as simply the Dipper (sometimes Great Dipper , its companion constellation always being the Little ...

Wiktionary Word definitions in Wiktionary
n. (context constellation English) A bright circumpolar asterism of the northern sky, said to resemble a ladle or cart. It is part of the constellation Ursa Major and includes the stars Mizar, Dubhe, and Alkaid.