Umbo sentence example

umbo
  • They protected themselves in battle with a large wooden or wicker shield, the centre of which was ornamented with an iron boss (umbo).
    0
    0
  • The ventral valve is usually the larger, and in many genera, such as Terebratula and Rhynchonella, has a prominent beak or umbo, with a circular or otherwise shaped foramen at or near its extremity, partly bounded by one or two plates, termed a deltidium.
    0
    0
  • The beak or umbo of each valve is prominent and rounded, and a number of sharp ridges and furrows radiate from the apex to the free edge of the shell, which is crenated.
    0
    0