Everything in his make-up helped: the broad, square shoulders, arms held close to his side; flat waist; Incurving back and narrow hips.
"Peter A Novel of Which He is Not the Hero"
F. Hopkinson Smith
It was, in general, bottle-shaped, with an Incurving shoulder at the top so that anything that fell in could not climb out.
"The World That Couldn't Be"
Clifford Donald Simak
She talked to him winsomely and very kindly as they crossed the open down to meet the next Incurving of the coast, and Siegmund was happy.
"The Trespasser"
D.H. Lawrence