A large mosquito or other insect capable of inflicting a painful bite.(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.
Use "gallinipper" in a sentence
"Note 1: gallinipper, any of various insects such as a large mosquito or crane fly, mainly used in the south and midland."
"I would say gallinipper, these gallinippers bites too hard"