graveyard slot

(television) A time period during which a television audience is very small compared to other times of the day.

Japanese Meaning

テレビ放送において、他の時間帯と比べ視聴者数が非常に少ない時間帯、つまり深夜や早朝などに設定される放送枠

The network moved the show to a graveyard slot, where very few viewers tuned in late at night.

ネットワークはその番組を視聴者が非常に少ない深夜の時間帯に移したが、わずかな視聴者だけが見続けた。

Sense（1）

(television) A time period during which a television audience is very small compared to other times of the day.

graveyard slots

（ plural ）