Definition of "ogee"

At the centre of this façade of one story is a porch of two stories with a tall attic and a gable of ogee outline flanked by finials.

1905, Charles Herbert Moore, “Chapter 13”, in Character of Renaissance Architecture

There is no pronounced ogee arch anywhere, though there is a suspicion of one where the open trefoils of the gables rest upon the containing arches. The tracery too of all the circles is geometrical, i.e., composed of simple curves; there is no flowing or ogee tracery with compound curves.

1910, Francis Bond, “Chapter 3”, in Wood Carvings in English Churches

In front of the leading splasher the frame was given what is called an ogee bend outwards, [...].

1959 June, A. G. Dunbar, “The "Cardeans" of the Caledonian”, in Trains Illustrated, page 309