the passage in the root of a tooth through which its nerve and blood vessels enter the pulp cavity
provide (a city) with a canal
a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
long and narrow strip of water made for boats or for irrigation
(botany) the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground
the place where something begins, where it springs into being
a number that, when multiplied by itself some number of times, equals a given number
