Numbers 13:24
So they called that valley Eshcol (Bunch of Grapes) because of the bunch of grapes the Israelites cut off there.
Treasury of Scripture Knowledge
Summary
The place was called the brook Eshcol, because of the cluster of grapes which the children of Israel cut down from thence.
Brook
Bible References
Brook
Numbers 13:23
At Eshcol Valley they cut off a branch with only one bunch of grapes on it. They carried it on a pole between two of them. They also brought some pomegranates and figs.