ལྡག(ldag) +པ(pa), the former from an earlier *C-ljag (C = prefix, likely the homorganic prenasalisation prefix *ɴ-), from Proto-Sino-Tibetan*m/s/g-ljak(“to lick”). Related to ལྕེ(lce, “tongue”), ལྗགས(ljags, “(polite) tongue”) and Burmeseလျက်(lyak, “to lick”).