Eight letter word question.

[munruben]

What is the 8 letter word that has kst in the middle, in the beginning and at the end?

[ss_11000]

inkstand:cool:

[chrisp]

Are you doing the crossword?

[chrisp]

The only others I can find are:

inkstone, backstay, backster, backstop

Edit: a few more: Hackster, huckster, Jackstay, lockstep, Pinkster

[munruben]

Stirlo got it in one. good work. if you read it carefully you will see how it is so.

[chrisp]

Ah, trick question. Now I see:)