cocket-centre Arch.
A centre or centering used in building an arch, when head-room is required above the springing line, to allow passage through during the time of building.
| 1841 S. C. Brees Gloss. of Civ. Eng. 52 Where head-room is left above the springing of the arches, such centres are termed cocket-centres. c 1858 A.P.S. Dict. of Archit. II. C. 58 Where a level tie-beam is omitted..such a centre is called a cocket centre. |