The Collaborative International Dictionary
Hawser iron
Hawser \Haws"er\ (h[add]z"[~e]r or h[add]s"[~e]r), n. [From F. hausser to lift, raise (cf. OF. hausser['e]e towpath, towing, F. haussi[`e]re hawser), LL. altiare, fr. L. altus high. See Haughty.] A large rope made of three strands each containing many yarns.
Note: Three hawsers twisted together make a cable; but it nautical usage the distinction between cable and hawser is often one of size rather than of manufacture.
Hawser iron, a calking iron.
Wiktionary
hawser iron
n. calking iron