Make known this is one top slammer in DC to escape from (8)
I believe the answer is:
disclose
'make known' is the definition.
('disclose' can be a synonym of 'make known')
'one top slammer in dc to escape from' is the wordplay.
'one' becomes 'i' (Roman numeral).
'top' says to take the initial letters.
'in' indicates putting letters inside.
'to escape from' becomes 'lose' (I can't explain this - if you can you should believe this answer much more).
The initial letter of 'slammer' is 's'.
'i'+'s'='is'
'is' put inside 'dc' is 'disc'.
'disc'+'lose'='DISCLOSE'
'this is' is the link.
Can you help me to learn more?
(Other definitions for disclose that I've seen before include "broadcast" , "Make public" , "Let out" , "Make known - subject is closed" , "show" .)