Definition of "pipistrelle" []

• Any of various very small insectivorous bats of the genus Pipistrellus, found throughout the world. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "However, while the many differences between these two species have only recently been acknowledged, both were originally named during the 1700s and 1800s: the 45 kHz pipistrelle is P. pipistellus (Schreber, 1774) while the 55 kHz pipistrelle is P. pygmaeus Leach, 1825."
• "This first bat is a common pipistrelle, the clicking sounds it produces registering at 45khz, and we count them out as they loop over the garden and head off towards the fields."
• "On one recent outing near the Olympic Stadium, Ms. Oliver found about 10 pipistrelle bats, a common bat in the British Isles."