To strike; to beat.
To gather in dense groups.
To form clusters or lumps.
To walk with heavy footfalls.
A thick group or bunch, especially of bushes or hair.
A small group of trees or plants.
A cluster or lump; an unshaped piece or mass.
A dull thud.
A thick addition to the sole of a shoe.
The compressed clay of coal strata.
To collide or strike, the act of impinging.
To stamp or impress onto something.
To significantly or strongly influence or affect; to have an impact on.
To compress; to compact; to press into something or pack together.
A significant or strong influence or effect.
A forced impinging.
The striking of one body against another; collision.
The force or energy of a collision of two objects.