Circle Line information that finally worker absorbs (7)
I believe the answer is:
tangent
'circle line information that finally worker absorbs' is the definition.
'tangent' can be an answer for 'circle line' (I've seen this in another clue). I am not certain of the remainder of the definition.
'circle line information that finally' is the wordplay.
'circle' becomes 'tang' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'finally' says to take the final letters.
The final letters of 'line information that' are 'ent'.
'tang'+'ent'='TANGENT'
Can you help me to learn more?
(Other definitions for tangent that I've seen before include "Trig ratio" , "seen to be touching" , "Line grazing another" , "Line touching curve at one point" , "Straight line resting on a circle" .)