testudo

/tɛˈstuːdoʊ/
noun
  1. A military formation used by ancient Roman soldiers, in which they locked their shields together above their heads to form a protective shell like a turtle's shell.
    • The Roman legion formed a testudo to protect themselves from arrows while approaching the fortress.
    • In the movie, the soldiers march forward under a testudo of overlapping shields.
    • The testudo was an effective defense against projectiles but made movement slow.
  2. A type of ancient Roman shelter or roof made of boards and hides, used by soldiers to protect themselves while digging or attacking walls.
    • The testudo was dismantled once the troops reached the base of the wall.
    • The engineers built a testudo of planks to shield the sappers as they dug under the city wall.
    • Under the cover of a testudo, the soldiers were able to approach the gate safely.
What does "testudo" mean? | whatsthatwordmean | whatsthatwordmean