suck out
Draw out completely
To suck out is to extract something by suction or drawing force: The dentist sucked out the excess saliva.
In poker, to suck out is to win a hand against the odds by catching a lucky card late: He sucked out on the river with a two-outer.
More broadly, sucking out can mean depleting: The humidity sucked all the energy out of me.
siphon
Liquid transfer tube
withdraw · pump · draw · extract · remove · pull · expel · evacuate · deplete · empty