4 across
A
lot
of
delay
blocking
courthouse
discharge
(7)
A lot of delay blocking courthouse discharge (7)
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The definition is at the end of the clue.
How the clue works
The discharge here is CATARRH. Take the initial A and TARRY (to delay) and drop its last letter to get "lot of" it, giving A TARR. Place these inside CH (the abbreviation for courthouse) to form the answer.