honk-honk1
/ˌhɒŋkˈhɒŋk/verb
[no object] And with object = honk.
Origin
Late 19th century; earliest use found in Daily Inter Ocean (Chicago, Illinois). Reduplication of honk.
honk-honk2
/ˌhɒŋkˈhɒŋk/exclamation
= honk. Also ( British informal ) used as a greeting, farewell, etc. (now rare ).
noun
= honk.
Origin
Mid 19th century. Reduplication of honk.