n. An electrical interface between one socket or connection and another, used to spread a connection to a wider pitch or to reroute it.
the GNU version of the Collaborative International Dictionary of English
n. One who, or that which, interposes or intervenes; an obstacle or interruption; a mediator or agent between parties.
The Century Dictionary and Cyclopedia
n. One who interposes or comes between others; a mediator or agent between parties.
Word Usage
"Well, now, my lord, said she, holding out her hand, as if threatening me, let you and me, man and wife like, join against the interposer in our quarrels."