This article explores lexical polysemy through drawing semantic network of Korean locomotion verb. Considering a semantic expansion within a cognitive f ramework, the present study posit that each verb 'ttalu-', and 'coch-' is represe nted as a semantic network consist of primary sense and secondary senses. In short, 'ttalu-' shows higher frequency and more senses than 'coch-' but each v erb take a similar path.