pullback

plural pullbacks · alternative pull-back

1. The act or result of pulling back; a withdrawal.
2. broadcastingThe act of drawing a camera back to broaden the visible scene.
3. archaicSomething that holds back; a drawback; a hindrance.

   Your disorders are a pull-back for your good qualities.

   1710 October 31 (date written; Gregorian calendar), Jonathan Swift, “[Dr. Swift’s Journal to Stella.] (please specify |letter=I–LXV).”, in Thomas Sheridan, John Nichols, editors, The Works of the Rev. Jonathan Swift, […], new edition, volume (please specify |volume=I to XIX), London: […] J[oseph] Johnson, […], published 1801, →OCLC

4. businessA reduction in the price of a financial instrument after reaching a peak
5. hobbiesAn attacking pass from the wing into a position further from the attacking goal line.

   The Reds carved the first opening of the second period as Glen Johnson's pull-back found David Ngog but the Frenchman hooked wide from six yards.

   2010 December 29, Sam Sheringham, “Liverpool 0 - 1 Wolverhampton”, in BBC

6. historicalA device for making a woman's gown hang close and straight in front.
7. differential geometryThe map between cotangent bundles of manifolds corresponding to a smooth map between smooth manifolds, which at each point is the dual map to the corresponding pushforward.
8. category theoryThe limit of a cospan: a Cartesian square or “pullback square”.

   Synonyms: fiber product, fibre product, Cartesian square, pullback square

9. category theoryWithin a Cartesian square (which has a pair of divergent morphisms and a pair of convergent morphisms) the divergent morphism which is directly opposite to a given one of the convergent morphisms, said to be “along” the convergent morphism which is between that pair of opposite morphisms. (The pullback is said to be “of” the given morphism.)
10. A move in tap dance involving a backward jump landing on the balls of the feet.