the fielding position of the player on a baseball team who is stationed at first of the bases in the infield (counting counterclockwise from home plate) | the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offers support when passing through a doorway |
the lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving | the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close |
an honours degree of the highest class | the smallest detectable sensation |
the first element in a countable series | a region marking a boundary |
the first or highest in an ordering or series | the starting point for a new state or experience |
the time at which something is supposed to begin | |