Okay, fair point, my use of the term is very eurocentric. I'll concede my ignorance on the social structures in other parts of the world where the term may still apply.

As I read this:

First, those agrarian movements which are done by the poor agriculture labourers and marginal farmers, and these kinds of movements are known as peasants movement.

That seems to include marrginal farmers, i.e. those with barely enough land to sustain their family, if that much. We're back to my point: Peasants may have land, but not enough to qualify as landholders. The criterion is not whether they have any, but whether they have too little, which includes having none at all.