đực rựa

Vietnamese

Etymology

This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.
Particularly: “From đực (“male”) +‎ rựa (“bush knife”)? What is the semantic connection here?”

Pronunciation

(Hà Nội) IPA^(key): [ʔɗɨk̚˧˨ʔ zɨə˧˨ʔ]
(Huế) IPA^(key): [ʔɗɨk̚˨˩ʔ ʐɨə˨˩ʔ]
(Saigon) IPA^(key): [ʔɗɨk̚˨˩˨ ɹɨə˨˩˨]

Noun

đực rựa

(colloquial, informal) boys
Cái lớp này toàn đực rựa, chẳng có đứa con gái nào.
There are only boys in this class, not even a single girl.