תָּאַם tâʼam (H8382)

to be (causatively, make) twinned, i.e. (figuratively) duplicate or (architectural) jointed

1) to be double, be joined 1a) (Qal) to be double 1b) (Hiphil) to bear twins

a primitive root; to be complete; but used only as denominative from תָּאוֹם (H8380),