English definition of “suck”
› [I, T] to have something in your mouth and use your tongue, lips, etc to pull on it or to get liquid, air, etc out of it: to suck a sweet/lollipop to suck your thumb
suck sth in/under/up, etc › to pull something somewhere using the force of moving air, water, etc: He was sucked under the boat and drowned.
be sucked into sth › to become involved in something bad when you do not want to
he/it/this, etc sucks! US very informal › If someone or something sucks, they are bad or unpleasant.