Aġjoskopju

Hagioscope (from Gr. άγιος, holy, and σκοπεῖν, to see) or squint is an architectural term denoting a small splayed opening or tunnel at seated eye-level, through an internal masonry dividing wall of a church in an oblique direction (south-east or north-east), to enable one or more worshippers in side-chapels, private manorial chapels, chantry chapels at the east ends of the aisles, or other parts of the church from which the high altar in the chancel was not visible, to view the elevation of the host, in Roman Catholic and pre-Reformation usage, the most sacred part of the mass at which point a bell was rung and the congregation was required to make the sign of the cross.

Source: Italian

Plural: Aġjoskopji