Definition of tayberry in English:
 tayberry
nounPlural tayberries ˈteɪb(ə)ri
A dark red soft fruit produced by crossing a blackberry and a raspberry.
 Example sentencesExamples
-  Uncooked tayberries are great in fruit salads and tarts.
 -  Add the lemon juice and pour through a sieve into six tall, elegant glasses with five or six tayberries, raspberries, brambles or strawberries in each.
 -  You could also add raspberries, loganberries, blueberries, tayberries and blackberries.
 -  Blackberries and raspberries are often crossed to give varieties such as the loganberry and tayberry.
 -  There was a short-lived fashion for Worcesterberries about ten years ago when they were unconvincingly touted as a rival for brambles or tayberries.
 
Origin
  
Named after the River Tay in Scotland, near where it was introduced in 1977.