Eyeglass

4 clues
Monocle
___ lens
Sight enhancer
Monocle, for example
Similar answers:
Aclass
Actingclass
Aerialassault
Aerobicsclasses
Agateglass
Ageclass
Aglass
Alass
Alassie
Angelassashes
Apclass
Artclass
Artclasses
Artglass
Astronomyclass
Atlasshrugged
Atlassliniments
Atouchofclass
Autoglass
Barefacedlassie