A dioptric telescope, fitted with two tubes joining, to be able to allow the viewing of an object with both eyes at a time; a double-barrelled field-glass or opera glass.
A dioptric telescope, fitted with two pipes joining, so as to enable people to see an object with both eyes at the same time; a double-barreled field-glass or an opera cup.
A dioptric telescope, fitted with two pipes the utilization of both eyes at a time: in addition employed for opera-glass.
A dioptric telescope, fitted with two tubes joining, so as to allow the watching of an object with both eyes at the same time; a double-barrelled field-glass or opera glass.
A dioptric telescope, fitted with two pipes joining, in order to enable a person to look at an object with both eyes at once; a double-barreled field glass or an opera cup.
A dioptric telescope, fitted with two tubes when it comes to utilization of both eyes at the same time: also used for opera-glass.
How would you define binocle?