kratom
Refers to the plant Mitragyna speciosa; a rare term in Japanese, usually written in katakana.
See also: クラトム
Kratom is a plant native to Southeast Asia, also called kratom.
Katakana spelling is standard for this plant name.
Kanji spelling is rare; the word is usually written in kana.
From 阿片 (あへん, 'opium') + 木 (ぼく, 'tree'), referring to the plant's opioid-like properties. The exact derivation is uncertain.