释义 |
bord \ˈbȯ(ə)rd\ noun also board \ˈbō(ə)rd, ˈbȯ-\ (-s) Etymology: board (I); probably from the former practice of laying boards in mine passageways to form a relatively smooth surface along which the coal was dragged in sledges : a straight road or passageway driven at right angles to the main cleavage of the coal in a coal mine |