a pine tree on the seashore / Synonym of 海唐松 (umi karamatsu): a coral of the family Antipathidae / (colloquial) the green sea or dead man's fingers, Codium fragile

glow stick

man of the hour

ammonium

(chemistry) Synonym of ナトリウム

(architecture, historical) an atrium: a kind of large living room in ancient Roman residential architecture

(idiomatic) tears (drops from the eyes)

(informal) "not knowing even a millimeter": completely ignorant in regards to something

crēdō ut intelligam

信号無視: jaywalking; one who disregards a traffic signal