nose leaf

from The Century Dictionary.

• noun A peculiar appendage of the snout of many bats, as the rhinolophine and phyllostomine forms, consisting partly of foliaceous extension and complication of the integument, partly of modified glandular structures (of the same character as those in which the vibrissæ of other bats are inserted) well supplied with nerves, the whole forming a delicate and highly sensitive tactile organ. See cut under Phyllorhina.