Diarist Jones spilling tea, sounding cross (6)
I believe the answer is:
bridge
'cross' is the definition.
(I know that bridge is a more specific form of the action cross)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for bridge that I've seen before include "going across river?" , "Hard ridge on the nose" , "played by a quartet" , "Card game - pontoon - couple" , "link" .)