What is the meaning of Reyn?

Obsolete form of rain.

Obsolete form of rein.

second-person singular active imperative of reyna

rain (water falling from a cloud)

A shower; an instance of rain.

Anything falling from the sky.

A surge of water.

A furrow or drain.

A barrier or boundary.

second-person singular present active imperative of reyna

Source: wiktionary.org