A shield bug with black and red stripes, Graphosoma lineatum.

Any of various shield-shaped true bugs of the superfamily Pentatomoidea.

A ship that is intended to serve as a mobile hospital with appropriate equipment and personnel.

(idiomatic) A person who will rescue a dangerous situation; a hero.

Alternative spelling of knight in shining armor

(simile) Quickly but futilely, away from a failing project.

Subject to frequent changes in direction. / (of a person's eyes) Moving from one object to another, not looking directly and steadily at the person with whom one is speaking.

A ship with masts and sails, powered by the wind.

A person who designs, builds and repairs ships, especially wooden ones.

Either of the two plates situated on the disk at the base of each ray of some starfish. / A radial graphite reflector surrounding a pressurized water reactor.