to interlock in the manner of locked fingers
• (v. t.) To interweave. • (v. i.) To interlock, as the fingers of two hands that are joined; to be interwoven; to commingle.
In`ter·dig'i·tate transitive verb To interweave. [ R.]
Latin inter = between, and digitus = a digit. Hence, to interlock like fingers.
to interlock, as or like the fingers of both hands.