concha
1 of 2noun (1)
con·cha ˈkäŋ-kə 
plural conchae ˈkäŋ-ˌkē
-ˌkī
1
a
: the plain semidome of an apse
b
: apse
2
: something shaped like a shell
especially : the largest and deepest concavity of the external ear
conchal
ˈkäŋ-kəl
adjective concha
2 of 2noun (2)
con·cha ˈkän-chə
variants or less commonly concho
ˈkän-(ˌ)chō
: an ornamental disk (as on clothing or tack) of American Indian origin featuring a shell or flower design
Word History
Etymology
Noun (1)
Italian & Latin; Italian conca semidome, apse, from Late Latin concha, from Latin, shell
Noun (2)
American Spanish concha, from Spanish, shell, from Late Latin conchula, diminutive of Latin concha
First Known Use
Noun (1)
circa 1639, in the meaning defined at sense 1a
Noun (2)
1887, in the meaning defined above
Medical Definition
concha
noun
con·cha
ˈkäŋ-kə also ˈkȯŋ-
plural conchae -ˌkē, -ˌkī
1
: the largest and deepest concavity of the external ear
2
: nasal concha