yen sleep
A trance-like state resulting from the use of opium or opioid drugs such as morphine…A trance-like state resulting from the use of opium or opioid drugs such as morphine or heroin.
Meaning
2 senses(uncountable)A trance-like state resulting from the use of opium or opioid drugs such as morphine or heroin.
(uncountable)A drowsy, restless period of sleep caused by the withdrawal of such substances.
Origin
From yen (“opium”) + sleep.From yen (“opium”) + sleep.
Wiktionary, CC BY-SA 4.0 · source
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable