noun
Describes eyes that are not fully open, often due to drowsiness, relaxation, or suspicion. Similar to 薄目 (うすめ) but 半目 is more about the state of being half-open rather than squinting.
彼は眠そうに半目でテレビを見ていた。
He was watching TV with half-open eyes, looking sleepy.
猫が気持ちよさそうに半目になっている。
The cat has its eyes half-closed, looking comfortable.