[first stone] See: [CAST THE FIRST STONE].

[first string] (1) {n.}, {informal} 1. The best group of players […]

[first thing off the bat] {adv. phr.} Immediately; at once. * […]

[first things first] Other things must wait until the most important […]

[first-class] (1) {adj.} 1. Of the highest class or best kind; […]

[first-class] (2) {adv.} With the best material; in the best or […]

[first-run] {adj. phr.} Shown for the first time; new. * /The […]

[first-string] {adj.}, {informal} 1. On the starting team or A team. […]

[firsthand] {adj.} Fresh; genuine; from the original source. * /John says […]

[fish] See: [COLD FISH], [KETTLE OF FISH], [NEITHER FISH NOR FOWL], […]