骨盆底 gǔpéndǐ pelvic floor Origin Definitions Defs Strokes Stroke Words Sentences Sents 骨盆 gǔpén pelvis the ring-shaped bony structure in humans and other mammals that supports the spine and protects organs such as the bladder底 dǐ nounlocative bottom The lowest part of an object or body of water; base; foundation