拉拉 is the reduplicated form of the verb 拉 (lā), meaning 'to pull' or 'to drag'. Reduplication gives the action a casual, light, or tentative tone — like 'give a little pull' or 'pull a bit'. It's used in informal spoken Chinese. Note that this entry is separate from the proper noun 'Lala' (a place or name), which is unrelated.