from
The Collaborative International Dictionary of English v.0.48
Raspberry \Rasp"ber*ry\ (r[a^]z"b[e^]r*r[y^]; 277), n. [From E.
rasp, in allusion to the apparent roughness of the fruit.]
(Bot.)
(a) The thimble-shaped fruit of the {Rubus Idaeus} and other
similar brambles; as, the black, the red, and the white
raspberry.
(b) The shrub bearing this fruit.
[1913 Webster]
Note: Technically, raspberries are those brambles in which
the fruit separates readily from the core or
receptacle, in this differing from the blackberries, in
which the fruit is firmly attached to the receptacle.
[1913 Webster]