指大的經(jīng)脈（《素問(wèn)．調(diào)經(jīng)論》：「無(wú)中其大經(jīng)。」）指本經(jīng)的經(jīng)脈（《靈樞．官針篇》：「三日經(jīng)刺，經(jīng)刺者，刺大經(jīng)之結(jié)絡(luò)經(jīng)分也。」）