Meaning

noun fastener consisting of a resinous composition that is plastic when warm; used for sealing documents and parcels and letters

verb make tight; secure against leakage

verb close with or as if with a seal

originFrom Middle English sel, from an inflectional form of Old English seolh, from Proto-West Germanic *selh, from Proto-Germanic *selhaz (compare Scots selch,selkie, North Frisian selich, Middle Dutch seel, zēle, Old High German selah, Danish sæl, Middle Low German sale, Icelandic selur), either from Proto-Indo-European *selk- (“to pull”) (compare dialectal English sullow (“plough”)) or from early…

Etymology from Wiktionary, CC BY-SA 3.0