Rest period midway through sentence? (4-4)
I believe the answer is:
half-time
'rest period' is the definition.
'half time' can be an answer for 'period' (half time is a kind of period). I'm unsure of the 'rest' bit.
'midway through sentence?' is the wordplay.
'midway through' becomes 'half' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'sentence?' becomes 'time' (I've seen this before).
'half'+'time'='HALF-TIME'
Can you help me to learn more?
(Other definitions for half-time that I've seen before include "Interval at games" , "Pause in middle of game" .)