Āpo-dhātu

āpo-dhātu: 'water-element'; s. dhātu.
[[[Wikipedia:Water|Water]] (or liquid) element (āpo-dhātu): Internal water elements include

    bile,
    phlegm,
    pus,
    blood,
    sweat,
    fat,
    tears,
    nasal mucus,
    urine, etc.

Also see: Mahābhūta;