"feeler, tactile organ," 1836, from French palpe, German palp, from Latin palpus "feeler," related to palpare "to touch softly, feel," which is of uncertain origin (see palpable).
palm-tree
palmy
Palmyra
palomino
palooka
palp
palpable
palpate
palpation
palpebral
palpitant