selfsame /ˈsɛlfseɪm/adjective 1noun 1forms 1 adjective1 •Chiefly preceded by the: precisely the same; the very same; the same not only in being similar but in being identical.For both of you are Birds of selfe-same Feather. — 1591 noun1 •(no longer used) Chiefly preceded by the: precisely the same person or thing.I present vvhat here is to you, vvherein you shall receive but the selfesame by Number and by Measure; vvhich, before, you had by VVeight. — 1634 formsselfsames