chelicera
noun
che·lic·era ki-ˈli-sə-rə 
plural chelicerae ki-ˈli-sə-ˌrē
: one of the anterior pair of appendages of an arachnid often specialized as fangs
cheliceral
ki-ˈli-sə-rəl
adjective 
Word History
Etymology
New Latin, from French chélicère, from Greek chēlē + keras horn — more at horn
First Known Use
1835, in the meaning defined above
Medical Definition
chelicera
noun
che·lic·era ki-ˈlis-ə-rə
plural chelicerae -ˌrē
: one of the anterior pair of appendages of an arachnid often specialized as fangs