Show people confined by record contagion (13)
I believe the answer is:
entertainment
'show' is the definition.
(I've seen this before)
'people confined by record contagion' is the wordplay.
'people' becomes 'men' (men can refer to humanity as a whole).
'confined by' indicates putting letters inside.
'record' becomes 'enter' (synonyms).
'contagion' becomes 'taint' (something contaminated or tainted).
'enter'+'taint'='entertaint'
'men' placed inside 'entertaint' is 'ENTERTAINMENT'.
(Other definitions for entertainment that I've seen before include "sport" , "Pleasure-giving" , "show business" , "Public show; hospitality" , "Provision of hospitality" .)