Stopped Henry meeting Theodore (6)
I believe the answer is:
halted
'stopped' is the definition.
('halt' can be a synonym of 'stop')
'henry meeting theodore' is the wordplay.
'henry' becomes 'hal' (short for Henry).
'meeting theodore' becomes 'ted' (I can't justify this - if you can you should give a lot more credence to this answer).
'hal'+'ted'='HALTED'
Can you help me to learn more?
(Other definitions for halted that I've seen before include "Came to a stop, ceased to move" , "Came to a sudden stop" , "Checked" , "Stopped or interrupted" , "Caused to stop" .)