the leads are 'brought out' in the sense that they (actually, the signals they convey) are made physically accessible to the 'outside world'. Although the effect is to make them accessible, an engineer is more likely to write 'are brought out' than 'are made accessible'.

some examples:

... The thermistors wired in series can be either wired in series internal to the motor
with only two leads brought out (usually for Canadian orders), or wired in ...
www.usmotors.com/Products/ProFacts/Thermistors.htm

... motors have nine leads brought out of the motor from the winding.
These are marked TI through T9, so that they may be connected ...
www.tpub.com/ceb/111.htm