Stand for male person in case of emergency (6)
I believe the answer is:
embody
'stand for' is the definition.
(embodying is a kind of standing for)
'male person in case of emergency' is the wordplay.
'male' becomes 'm' (common abbreviation).
'person' becomes 'bod' (bod can informally mean a person or body).
'in' indicates putting letters inside.
'case of' says to hollow out the word (remove centre letters) (outsides of).
'emergency' with its middle taken out is 'ey'.
'm'+'bod'='mbod'
'mbod' placed inside 'ey' is 'EMBODY'.
(Other definitions for embody that I've seen before include "Contain within oneself, incorporate" , "Include (something) as a constituent part" , "Express concretely - personify" , "Give solid form to" , "Represent in tangible form" .)