Cryptic Hiccup?

[Otis]

Ermine grunt abused a lapse in government function. (11)

 

[Harry_the_cat]

**interregnum**

 

[Otis]

As Denis would say, "Keerect!"

I've been learning new words from the media, this week.

?

 

[Harry_the_cat]

I admit I used and anagram solver for that one. Never heard of the word!