Dictionary Definition:
Vaddhaka [vaddha+ka] in cpd. aŋsa˚ "shoulder strap" should be the uniform reading for a series of diff. spellings (˚vaṭṭaka, ˚baddhaka, ˚bandhaka) at Vini.204; ii.114; iv.170. Cp. Geiger, Zeitschrift fur Buddhismus iv.107.