A one-page encyclopedia entry defining 'quill' as the hollow shaft of a bird's feather, especially the goose, swan or crow feathers used for pens. It also covers the word's uncertain origin, quills used as plectra in stringed instruments and keyboard actions, and the verb 'to quill', meaning to fold lace, muslin or other light fabric into narrow pleats (quilling). It ends with the French 'quillon', the cross guard of a sword hilt.