What is the meaning of Dern?

A secret; secrecy.

A secret place; hiding.

An obscure language.

Darkness; obscurity.

Hidden; secret; private.

To hide; secrete, as in a hole.

To hide oneself; skulk.

A gatepost or doorpost.

turf

first-person singular present subjunctive prototonic ro-form of do·gní

Source: wiktionary.org