What is the meaning of 'Zaminbos', a form of ritual practised in the court of Shah Jahan?

Kissing the ground

The forms of salutation to the ruler indicated the person’s status in the hierarchy: deeper prostration represented higher status. The highest form of submission was sijda or complete prostration. Under Shah Jahan, these rituals were replaced with Chahar taslim and zaminbos (kissing the ground)