He was on the shoreside wall of a u-shaped rock ledge that extended into the sea and formed a natural harbor.
Staples are small U-shaped pieces of iron with pointed ends.
The weight dips into one limb of a U-shaped glass tube (U), which contains mercury.
Externally to the incubator this tube is connected with a U-shaped one containing mercury.
The section of the stalk shows a single U-shaped fibro-vascular bundle, and a strong outer sclerenchymatous sheath.
