源自梵语 ओष्ठ (oṣṭha) + -ము (-mu);源自原始印欧语 *h₁oh₁s- (“嘴”)。
ఓష్ఠము • (ōṣṭhamu) ? (复数 ఓష్ఠములు)
“ఓష్ఠము” in Charles Philip Brown (1903) A Telugu-English dictionary, Madras: Promoting Christian Knowledge, page 220