Conceived this while removing dire embroidery (6)
I believe the answer is:
embryo
'conceived this while removing dire embroidery' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
This is all the clue.
Can you help me to learn more?
(Other definitions for embryo that I've seen before include "Future" , "Sometimes the result of an accident" , "Early form of unborn baby" , "Conceptus" , "Primitive state" .)