Danger signal as English tuck into some breakfast (6)
I believe the answer is:
beacon
'danger signal as' is the definition.
I know that 'signal' relates to this answer.
'english tuck into some breakfast' is the wordplay.
'english' becomes 'E' (abbreviation).
'tuck into' indicates putting letters inside.
'some breakfast' becomes 'bacon'.
'e' going inside 'bacon' is 'BEACON'.
Can you help me to learn more?
(Other definitions for beacon that I've seen before include "make light of it" , "Shiner" , "Hilltop signal fire" , "Prominent light on a hill" , "Signal fire - lighthouse" .)