A sea-hank is a woman with a salty, fishy vagina. She resembles a hobo, only with a more queefy smell. Sea-hanks tend to flock around boys who listen to metal and have long, curly hair.
"Did you see Nathaniel?! He hooked up with a sea-hank!!"
"If you want to get laid just play some metal and the sea-hank will flock to you like a giant cloud of pussy dildos."