( Read word from C<, copy to WORDBUF, null-terminate, and
  return WORDBUF. )
: _wb 0x0e RAM+ ;
: _eot 4 _wb ! _wb ;
: WORD
    _wb 1+ TOWORD ( a c )
    DUP EOT? IF 2DROP _eot EXIT THEN
    BEGIN
        ( We take advantage of the fact that char MSB is
          always zero to pre-write our null-termination )
        OVER ! 1+ C< ( a c )
        OVER 0x2d ( 2e-1 for NULL ) RAM+ = OVER WS? OR
    UNTIL ( a c )
    SWAP _wb - 1- ( ws len ) _wb C!
    EOT? IF _eot ELSE _wb 1+ THEN ;