A Dictionary of the Older Scottish Tongue (up to 1700)
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About this entry:
First published 1937 (DOST Vol. I).
This entry has not been updated since then but may contain minor corrections and revisions.
Apertore, n. [L. apertūra, whence also mod. E. aperture from 17th c.] Opening. —Irland Mir. MS. 146 b (without ony hole or apertore).