saliva produced first thing in the morning, before breakfast, once believed to be useful in treating diseases

plural of fast-talker

Alternative form of bedfast

plural of fast lane

On a multilane road, the lane intended or reserved for vehicles moving at faster speeds. / (figuratively, by extension) Any situation or activity where the pace is very rapid.

With hands that move very quickly. / Highly efficient at improvisation. / Sexually aggressive. / (obsolete) Greedy, miserly.

(marketing) One who is not an early adopter but begins using a product or service shortly after its introduction.

plural of fast follower

Moving rapidly / Of or relating to a situation in which events follow each other in quick succession / (of a product) That is sold quickly

plural of fast break