Of the nature of, or resembling, a pale or stake. Now chiefly (Zoology): of or relating to the pali of a coral.
Late 17th century; earliest use found in John Gibbon (1629–1718), herald. From classical Latin pālāris consisting of or involving stakes from pālus + -āris.
Of or relating to the pala or palae of an (aquatic heteropteran) insect.
1950s; earliest use found in Thomas Southwood (b. 1931). From pala + -ar.