someone who is easily tricked or persuaded to do something:
You fell for that old line? Sucker!
to like someone or something very much, especially so that you cannot refuse them:
I'm a total sucker for seafood.
a part of an insect or of an animal's body that it uses to hold on to a surface
part of an animalHBIHBA
a part of a plant that grows from the root or lower stem of a plant to become a new plant
a flat round piece of rubber that sticks to a surface by suction