Planks joined to make shelves—e. g. in the atrium of a house for the imagines
or for book-shelves (Auson.
Epigr. 26, 10
; Ad. Att.
A wooden structure of several stages (four are sometimes mentioned) which could be raised
or lowered by weights and pulleys (Epist.
89). The pegmata were used in the
Roman amphitheatres and spectaculas in various ways; for effecting sudden transformation,
like the double stage of the old Madison Square Theatre in New York City; and sometimes for
letting off fireworks (Vopisc. Carin.