toenail Syllabification: (toe·nail)Pronunciation: /ˈtōˌnāl/Translate toenail | into German | into Italian | into Spanish Definition of toenail noun 1the nail at the tip of each toe. 2a nail driven obliquely through a piece of wood to secure it. verb [with object] fasten (a piece of wood) by driving a nail obliquely through it. toenail in other Oxford dictionaries Definition of toenail in the British & World English dictionary