An offering of the first of the harvest; firstfruits. / The first growth, allegory for the first people to receive the message.

plural of firstfruit / Alternative form of first fruits.

plural of firstborn

Firstborn.

The first produce or result, notably firstborn offspring. / The first of a class or kind. / The thing first thought or done.

plural of firstling

A member of a first string.

The state or condition of being first; priority.

(US politics) A supporter of any one of the "America First" isolationist movements or parties.

(nonstandard, non-native speakers' English) First of all; firstly