Pronunciation: ˌ ri ŋ -k ō -s ə - ' f ā l-y ə n
Function: noun
Etymology: ultimately from Greek rhynchos beak, snout + kephal ē head ― more at CEPHALIC
Date: 1886
: any of an order (Rhynchocephalia) of reptiles resembling lizards that includes the tuatara as the only living member
– rhynchocephalian adjective