Definition of canalling:
(n) :
An artificial waterway or artificially improved river used for travel, shipping, or irrigation.
(v) :
To travel along a canal by boat
(v) :
To dig an artificial waterway in or to (a place), especially for drainage
(n) :
(anatomy, botany) A tubular channel within the body or within a plant.
(n) :
(astronomy) One of the faint, hazy markings resembling straight lines on early telescopic images of the surface of Mars; see Martian canals
(n) :
A surname.