Sentence:  ‘Who said there was going to be any killing?' The lightning flared up and showed his tight shabby jacket, the bunch of soft hair at the nape. ‘I've got a date, that's all. You be careful what you say, Spicer. You aren't <WSD>milky</WSD>, are you?' / ‘I'm not <WSD>milky</WSD>. You got me wrong, Pinkie. I just don't want another killing ...' 
Meaning of the word marked with <WSD> tags:  Cowardly.