dalk-ken
Remember it is 'a' as in English 'apart' and not as in 'apple'. Listen to the audio for the correct pronunciation.

dalk (kun-dalk / gun-dalk) 'grass' and the genitive suffix -ken 'of, pertaining to', thus 'of the grass' or 'that which lives in the grass'

In Kundjeyhmi there is a synonym nakarndeken. Note that in Kundjeyhmi some speakers would also refer to the sugar glider (or apparently it's called the 'lambalk glider' now) as dalkken too. When reduplicated dalkkedalkken, it refers to a bird, the red-backed fairy wren. Why? Guess!

Yika Bininj kabirri-yime dalkken kaben-baye kunj, yika larrk. Birri-ngudjbang kunj na-warddeken, minj bale ka-yime bu dalkken kaben-ngudjkadjung ku-wardde, kayakki, kabirri-ngudjbawon kunj. (W)

Some people say that dingoes can sometimes kill rock kangaroos too and sometimes they can't. The rock-wallabies are too fast, making it difficult for the dingoes to get them amongst the rocks as the wallabies are too fast for them.