1) Arched 2) Bent 3) Vaulted 
Embowed is a term in heraldry and architecture which means: ==Examples== The heraldic examples illustrated show the pile embowed inverted throughout azure of the Coat of arms of the Western Cape, and the three legs embowed conjoined in the fesse points in armour proper spurred and garnished or of the Triskelion on the Flag of the Isle of Man and i...
In heraldry, embowed refers to a charge which is bent.
bent; vaulted; arched.