Definify.com
Webster 1913 Edition
Opener
O′pen-er
,Noun.
1.
One who, or that which, opens.
“True opener of my eyes.” Milton.
Webster 1828 Edition
Opener
OPENER
,Noun.
1.
One that opens or removed any fastening or covering.2.
One that explains; an interpreter.3.
That which separates; that which rends.4.
An aperient in medicine.