An animal's sucker, especially one on the end of each tube foot of an echinoderm.
〔动〕吸盘（尤指棘皮类动物管足底的吸盘）
Example sentencesExamples
The family is similar to Gobiidae but generally lacks the pelvic fin fusion that creates a ‘sucking disc’ in gobies.
Attaching themselves to the body of the host by means of the sucking disc which is ringed with sharp teeth, a hole is rasped through the victim's skin, and blood and body fluids are thus consumed.
The two main classes are separated on the basis of taxonomic characters of the claws and/or sucking disks, cuticle, cephalic appendages, buccal apparatus, and reproductive structures.
The male may also make exaggerated swimming motions in place by anchoring himself with the sucking disc.