Half of twice (4)
I believe the answer is:
once
(Other definitions for once that I've seen before include "Previously" , "Cone (anag.)" , "in bygone days" , "Sometime" , "Formerly; as soon as" .)
I believe the answer is:
once
(Other definitions for once that I've seen before include "Previously" , "Cone (anag.)" , "in bygone days" , "Sometime" , "Formerly; as soon as" .)