They ruminate about bone Open University added
I believe the answer is:
caribou
'they ruminate' is the definition.
The definition suggests an adverb but the answer is not.
'about bone open university added' is the wordplay.
'about' becomes 'ca' (short for circa).
'bone' becomes 'rib' (rib is a type of bone).
'open university' becomes 'OU'.
'added' says to put letters next to each other.
'ca'+'rib'+'ou'='CARIBOU'
Can you help me to learn more?
(Other definitions for caribou that I've seen before include "Ruminant" , "N.American reindeer" , "North American Arctic deer" , "Creature" , "Wild animal" .)