The transition of matter from a solid state to a liquid state.
3
The springtime snow runoff in mountain regions.
4
A melt sandwich.
verb
1
To change (or to be changed) from a solid state to a liquid state, usually by a gradual heat.
I melted butter to make a cake.
2
To dissolve, disperse, vanish.
His troubles melted away.
3
To soften, as by a warming or kindly influence; to relax; to render gentle or susceptible to mild influences; sometimes, in a bad sense, to take away the firmness of; to weaken.