'厕所有' literally combines 厕 (cè, 'toilet'), 所 (suǒ, a nominalizer meaning 'place' or 'facility'), and 有 (yǒu, 'to have/exist'). Together, it forms an existential phrase meaning 'there is a restroom' — not a noun meaning 'restroom' itself. It functions as a verb phrase indicating presence or availability of a restroom in a given location.

This phrase is commonly used in spoken Chinese when asking about or confirming restroom access — for example, in restaurants, hotels, or public spaces. Unlike the noun 厕所 (cèsuǒ, 'restroom'), 厕所有 emphasizes existence and is typically used with location words (e.g., 这里、前面、楼上). It follows the standard Chinese existential structure 'Location + 有 + Noun', but here the noun is fused into the compound 厕所.