at first

A square of white linen worn at first on the head, but now about the neck and shoulders, by priests of the Roman Catholic Church while saying Mass. n

A light helmet, at first open, but later made with a visor.

n a base hit on which the batter stops safely at first base

n the first or highest in an ordering or series n the first element in a countable series n the time at which something is supposed to begin n 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) n an honours degree of the highest class n the lowest forward gear ratio in the gear box of a motor vehicle

coextensive with the family Ginkgoaceae: plants that first appeared in the Permian and now represented by a single surviving species