Brown–Driver–Briggs: נָגַר

[נָגַר] vb. pour, flow, run

Niph.

1. be poured, split

2. pour oneself, flow, trickle, of eye (in tears)

3. fig. vanish

4. be stretched out (?)

Hiph. pour down, hurl down

Hoph. of mountains melting at theophany.