As an adjective semicircular
is in the shape of half of a circle or a semicircle.
As a noun wiltja is
a semicircular Aboriginal dwelling, intended as a temporary shelter from the heat of the sun.
semicircular
English
Adjective
(-)
In the shape of half of a circle or a semicircle.
wiltja
English
Noun
(
en noun)
A semicircular Aboriginal dwelling, intended as a temporary shelter from the heat of the sun.