bouton(redirected from end-foot)
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A knoblike enlargement at the end of an axon, where it forms a synapse with other neurons.
[French, button, from Old French; see button.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
the enlarged part of a nerve fibre or cell which facilitates contact between nerves
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014