octopus – (n.) octopus vulgaris; a soft-bodied, eight-limbed mollusk
octopuss – (n.) a fearsome critter of woodland folklore said to stalk unsuspecting dog walkers in the twilight hours
octopie – (n.) octopus deliciosus; a soft-filled, eight-layered pastry
octopi – (n. pl.) the plural of octopus
octopuses – (n. pl.) how boring people pluralize octopus
octopieces -(n. pl.) a litter of baby octopi
Octopussy – (n.) an Ian Fleming short story and 1983 James Bond film starring Roger Moore
octothorpe – (n.) how cool people pronounce ‘#’