shuttering
shut ter ing |ˈSHətəriNG ˈʃədərɪŋ | ▶noun wood in planks or strips used as a temporary structure for fencing to contain setting concrete, to support the sides of dirt trenches, or for similar purposes. • a temporary structure of this kind.
shut ¦ter |ing |ˈʃʌt (ə )rɪŋ | ▶noun [ mass noun ] wood in planks or strips used as a temporary structure to contain setting concrete, to support the sides of earth trenches, or similar. • [ count noun ] a temporary structure of this kind.