Read Edit View history 老二 lǎo'èr penis Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 老二 lǎo'èr penis noun, punctuation · a euphemism for the male sex organ 他被踢中了老二，疼得倒在地上。 Edit Delete 老二 lǎo'èr second child noun · the second-eldest child in a family 我家老二今年刚上小学。 Edit Delete References Add reference No references for this word.