1. The leopard, especially in its black unspotted form.
2. See mountain lion.

[Middle English pantere, from Old French and from Old English panthera, both from Latin panthēra, from Greek panthēr.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.