被せる
かぶせる · kabuseru · JLPT N2 · verb-ichidan
to cover (with something)
🫙 被 (be covered) + せる: 'to cover' sounds like 'kabu-seru', like a kabuto helmet covering your head
被 — clothes radical 衤 + 皮 (skin/hide)
Originally a semantic-phonetic compound: 衤 (clothing) gives the meaning 'blanket/quilt', while 皮 supplies the sound. From 'covering' it extended to 'cover oneself with', then grammaticalized into the passive marker 'by', its most common modern use.