touch and go

Adjective

 * 1) Precarious, delicate, risky, sensitive; of uncertain outcome (by analogy with a ship in shallow water).
 * His condition was touch and go for a time after the accident, but they think he will recover.
 * I could sense it was touch and go whether I could get the lay.

Verb

 * 1)  To perform a touch-and-go landing.
 * 2)  To touch bottom lightly and without damage, as a vessel in motion.