rib-bruising

[suprunp]

The flames soon cleared, and as Thorn [a dragon] rushed past overhead, the tip of his thick, rib-bruising tail traced a line across the membrane of her right wing.
(C. Paolini; Inheritance)

Is the part in bold supposed to mean 'that bruises ribs'?

Thanks.

[bhaisahab]

The flames soon cleared, and as Thorn [a dragon] rushed past overhead, the tip of his thick, rib-bruising tail traced a line across the membrane of her right wing.
(C. Paolini; Inheritance)

Is the part in bold supposed to mean 'that bruises ribs'?

Thanks.

It seems that the dragon has a tail that is capable of bruising ribs.