Sentence:  Harry ripped the parcel open and gasped as a magnificent, gleaming <WSD>broomstick</WSD> rolled out onto his bedspread. [...] It was a Firebolt, identical to the dream broom Harry had gone to see every day in Diagon Alley. 
Meaning of the word marked with <WSD> tags:  a broom imbued with magic, enabling one to fly astride the handle.