Definition of pluteus
plural plutei
\-ēˌī\
also pluteuses
1 a
: a low wall or parapet in ancient Roman architecture;
especially
: one used as a partition between the bases of columns
b
: an ancient Roman reading desk or storage place for manuscripts
2
[New Latin, from Latin]
: the free-swimming bilaterally symmetrical larva of a sea urchin or ophiuran distinguished by several slender anteriorly projecting processes enclosing calcareous rods 
