jack bean; jack benny; jack crevalle; jack dempsey; jack frost; jack kennedy; jack kerouac; jack ladder; jack lemmon; jack london; jack mackerel; jack nicklaus; jack oak; jack of all trades; jack off; jack pine; jack plane; jack roosevelt robinson; jack salmon; jack the ripper; jack up; jack william nicklaus; jack-a-lantern; jack-by-the-hedge; jack-in-the-box; jack-in-the-pulpit; jack-o'-lantern; jack-o-lantern; jack-o-lantern fungus; jack-tar;