What is the meaning of Gh-?

Marks the progressive and future modes

Marks the perfective of verbs in the gh-perfective paradigm

Marks the progressive mode, indicating ongoing action.

With the inceptive suffix t-, marks the future mode.

Marks the gh-perfective paradigm.

The gh-qualifier, a verbal prefix appearing in verbs relating to tethering, tension, ropes, and levering.

gathering

finishing

To move oneself, to work.

To move with tension, resistance, while being tethered.

Source: wiktionary.org