A chine is a steep-sided river valley where the river flows to the sea through, typically, soft eroding coastal cliffs of sandstone or clays. The word chine originates from the Saxon "Cinan" meaning a gap or yawn. The word is in still use in central Southern England; in East Devon, Dorset, Hampshire, and the Isle of Wight to describe such topographical features. However, 'bunny' is also used to describe a chine in Hampshire, as noted below.
Read more about Chine: Formation and Features, Chines On The Southern Coast of The Mainland of England, Chines of The Isle of Wight