Look in on borders of Californian Bluebell (4)
I believe the answer is:
call
This could be a double definition.
'look in' is the first definition.
(thesaurus)
'borders of californian bluebell' is the second definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'on' is the link.
Can you help me to learn more?
(Other definitions for call that I've seen before include "Visit; telephone" , "Visit; shout" , "Ring or visit" , "Telephone - give a name" , "Summon; shout" .)