涙るい小しょう管かん

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Meanings

1

noun

lacrimal canaliculus; tear duct

Medical term for the small channels that drain tears from the eye into the lacrimal sac. Used in anatomy and ophthalmology contexts.

小little, small

管pipe, tube, wind instrument

涙るい腺せん
涙腺 refers to the lacrimal gland that produces tears, while 涙小管 refers to the small ducts that drain tears away.
鼻び涙るい管かん
鼻涙管 is the nasolacrimal duct, the larger passage that carries tears from the lacrimal sac into the nasal cavity; 涙小管 are the smaller canals leading into the sac.

Compound of 涙 (tear) + 小 (small) + 管 (tube, duct). The reading るい for 涙 is the on'yomi used in medical compounds.