grapnel
grapple
grappler
grappling hook
grappling iron

They hooked the grappling iron onto the top of the ladder and slid down the rope.

This line won't take the strain, and anyway I think the grappling iron would just come splintering out of the wood.

Then they loosened the grappling irons and pulled up the ropes.

Yet they did not cast off the grappling irons but waited to see what the three men would do next.

We don't want to get the grappling irons out tonight.

At that instant I suddenly arose and threw the grappling iron.

Others ran to the grappling irons, and the rest began to shoot with their bows.

In every prow, a man swung a menacing grappling iron.

Don't wait for the sloop or think about her, but just see that the grappling irons are fast, and then get aboard.

His men were throwing grappling irons to bring the two ships together.