1856 D. M. Mulock I. iv. 79 I've often seen it on Severn... We often call it the river-boar.
1923 June 566 Hence a river bore causes high water to occur nearer to the preceding than to the following low water.
2003 257/1 The Official British Surfing Association holds the record for the longest ride on a river bore, set on the Severn Bore, UK.