For twin engined aircraft, there may be operational limitations not to taxi on a single engine BEFORE departure, such as on the 737, which only recently received Boeing approval to enable such actions subject to approval and establishment of operator procedures.
This is due to the fact the takeoff weight is substantially higher and would require significantly more thrust to start moving once a full stop during taxi has been made. This could also apply to other twins on the market, especially those going longer and further.
On the 747, or other quads or even tri's, the case of taxiing on two engines is not as rare, especially with prolonged ground delays, however once again, due to the increased weight before departure, this may have some operational restrictions and limitations.