Expanded and spoke at length (7)
I believe the answer is:
dilated
I believe this is a double definition.
'expanded' is the first definition.
(similar in meaning)
'spoke at length' is the second definition.
(I've seen this before)
'and' is the link.
(Other definitions for dilated that I've seen before include "Distended" , "like pupils in the dark" , "Widened; expanded" , "Became more open" , "Made more open/wide" .)