Erects billets (4,2)
I believe the answer is:
puts up
This clue could be a double definition.
'erects' is the first definition.
('put up' can be a synonym of 'erect')
'billets' is the second definition.
Although both the answer and definition are verbs in their -s form, I cannot understand how they can define each other.
Can you help me to learn more?
(Other definitions for puts up that I've seen before include "Offers (stake); bears (with)" , "Finds shelter" .)