Wooden collar (4)
I believe the answer is:
yoke
(Other definitions for yoke that I've seen before include "Wood joining draught oxen" , "Old harness or oppression" , "It joins two working animals together" , "couple" , "Enslave" .)
I believe the answer is:
yoke
(Other definitions for yoke that I've seen before include "Wood joining draught oxen" , "Old harness or oppression" , "It joins two working animals together" , "couple" , "Enslave" .)