noun
field glasses; binoculars
Refers to portable binoculars, especially for outdoor use such as birdwatching or sports events. A straightforward loanword from English.
バードウォッチングにフィールドグラスを持っていく。
I take field glasses for birdwatching.
スタジアムでフィールドグラスを使って選手を見た。
I used field glasses to watch the players at the stadium.
双眼鏡 is the more common general term for binoculars. フィールドグラス is a specific loanword often implying compact, outdoor-use binoculars.
Loanword from English 'field glasses'.