wingpit

plural wingpits

1. The location under and at the base of the wing, where the axillary feathers are found (analogous to the armpit of an arm).

   The best character for prairie falcon is the overall paler color and the contrasting dark axillaries, the " wingpit."

   2000, Bird Watcher's Digest - Volume 23, page 36

   2 more examples

   With black, pick up and knit 9 sts from shoulder to “wingpit” by picking up in one half of each edge st every other row. Turn body over and pick up 9 sts from wingpit to shoulder on the other side—18 sts.

   2011, Melanie Falick, Weekend Knitting: 50 Unique Projects and Ideas

   He gets such a kick out of his victory, that his foot gets stuck inadvertently in his wingpit. “There it is, written in black and white—printed, no less!” On account of his still-stuck foot, Owl relishes his triumph in a precarious balance on a branch.

   2014, Alan Bertrand, Glee, page 109