Sceaftボズワースとトラーラーのアングロ・サクソン古英語辞典 - sceaft古英語辞典によると:sceaftIV. add: In the phrase scæfta munda perhaps sceaft was intended to denote the extended thumb, N. E. D. shaftment. v. web-sceaft: lang-sceaft; adj. -sceaft,sceaft