101 in the strobile (4)
I believe the answer is:
cone
'the strobile' is the definition.
(synonyms)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for cone that I've seen before include "Roadworks marker" , "Geometrical shape" , "Ice cream holder" , "Road works marker" , "Tapering solid" .)