First day

2. Foremost; in front of, or in advance of, all others. [1913 Webster]

3. Most eminent or exalted; most excellent; chief; highest; as, Demosthenes was the first orator of Greece. [1913 Webster]

{At first blush}. See under {Blush}.

{At first hand}, from the first or original source; without the intervention of any agent. [1913 Webster]

It is the intention of the person to reveal it at first hand, by way of mouth, to yourself. --Dickens.

{First coat} (Plastering), the solid foundation of coarse stuff, on which the rest is placed; it is thick, and crossed with lines, so as to give a bond for the next coat.

{First day}, Sunday; -- so called by the Friends.

{First floor}. (a) The ground floor. [U.S.] (b) The floor next above the ground floor. [Eng.]

{First fruit} or {First fruits}. (a) The fruits of the season earliest gathered. (b) (Feudal Law) One year's profits of lands belonging to the king on the death of a tenant who held directly from him. (c) (Eng. Eccl. Law) The first year's whole profits of a benefice or spiritual living. (d) The earliest effects or results. [1913 Webster]

See, Father, what first fruits on earth are sprung From thy implanted grace in man! --Milton.

{First mate}, an officer in a merchant vessel next in rank to the captain.

{First name}, same as {Christian name}. See under {Name}, n.

{First officer} (Naut.), in the merchant service, same as {First mate} (above).

{First sergeant} (Mil.), the ranking non-commissioned officer in a company; the orderly sergeant. --Farrow.

{First watch} (Naut.), the watch from eight to twelve at midnight; also, the men on duty during that time.

{First water}, the highest quality or purest luster; -- said of gems, especially of diamond and pearls.

Syn: Primary; primordial; primitive; primeval; pristine; highest; chief; principal; foremost. [1913 Webster]