#socket.receptacle  receptacle where something (a pipe or probe or end of a bone) is inserted
  supertype:  #receptacle  a container that is used to put or keep things in
  part of:  #ball-and-socket_joint  a joint that can rotate within a socket
  part of:  #box_wrench__boxwrench__box_end_wrench__boxendwrench  a wrench with a closed loop (a socket) that fits over a nut or bolt head
  part of:  #socket_wrench  a wrench with a handle onto which sockets of different sizes can be fitted

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