涙るい道どうるいどうMeanings1nounlacrimal passage; tear duct systemMedical/anatomical term for the pathway that drains tears from the eye into the nasal cavity. Used in clinical contexts.涙るい道どう閉へい塞そくは、涙なみだがあふれる原げん因いんになります。A blocked lacrimal passage can cause tears to overflow.