aculea
noun
acu·lea
ə-ˈkyü-lē-ə
plural aculeae
ə-ˈkyü-lē-ˌē
: a minute spinous outgrowth on the wing membrane of certain insects
Word History
Etymology
borrowed from New Latin, feminine derivative of Latin aculeus "stinger, spine"
First Known Use
1925, in the meaning defined above