Sentence:  Stepping over her, he unbuttoned the <WSD>pram</WSD>′s apron and pulled it back. / At first he couldn′t make out what the <WSD>pram</WSD> contained. He had to crane himself over, holding his body back from the obscuring light. The <WSD>pram</WSD> was full of groceries—cabbage, sprouts, potatoes. 
Meaning of the word marked with <WSD> tags:  A small vehicle, usually covered, in which a newborn baby is pushed around in a lying position; a perambulator.