ventage

vent +‎ -age

ventage (plural ventages)

1. A puff of air coming through a hole in a wind instrument
   • 1602 : William Shakespeare, Hamlet, act III scene 2

     Govern these ventages with

     your fingers and thumb, give it breath with your

     mouth, and it will discourse most eloquent music.

2. venting (the act by which something is vented)
   • 1893, Robert Burton Buckley, Irrigation Works in India and Egypt, page 164:

     In some Madras examples which have been successful, the ventage in the under-sluices is about the same as that in the head-sluices above them.

   • 1943, The intertype:

     The most important factor in casting solid, close-grained slugs suitable for withstanding pressure in direct printing is efficient ventage of air from the mold each time a slug is cast.

• vegetan