What is the meaning of Plain_sailing?

1. The navigation of waters free from hazards or unfavourable winds.
2. Obsolete spelling of plane sailing (“a technique for navigation using the assumption that the journey occurs over a plane or flat surface rather than the actual curved surface of the Earth, which is sufficiently accurate over short distances”).

The navigation of waters free from hazards or unfavourable winds.

Obsolete spelling of plane sailing (“a technique for navigation using the assumption that the journey occurs over a plane or flat surface rather than the actual curved surface of the Earth, which is sufficiently accurate over short distances”).

Something that is easy, simple, or straightforward; something that offers no difficulties or trouble.

Source: wiktionary.org