seal
Noun pluralseals
Pluralseals
- 1To close something tightly so nothing can leak in or out, or so no one can open it secretly.
Like closing a bag of chips tightly so they don't go stale.
Seal the jar tightly so the jam stays fresh.
She sealed the container before putting it in the freezer.
UsageSay seal the jar tightly.
Oppositeopen
Note
- 2A sea animal with flippers that usually lives in cold oceans and eats fish.
Like a dog that swims, with smooth flippers instead of legs.
A seal slid off the rock and dove into the cold water.
The seals barked loudly along the rocky shore all morning.
Note
- 3
- 4To make something so certain that it cannot change.
Like locking a door so nothing can change what is inside.
Her brilliant performance sealed the win for the team.
One more goal will seal the match.
UsageSay seal the deal when an agreement becomes final.
Similarclinch, secure, settle, confirm, cement
Note
- 5
- 6To cover wood, stone, concrete or another surface with a coat that keeps out water and stains.
We need to seal the deck before the rainy season starts.
Dad sealed the stone floor so coffee spills wouldn't leave marks.
Similarwaterproof
Note
- 7
- 8Something that shows that a thing is approved, real or certain, as in 'a seal of approval'.
Like a gold star a teacher gives for good work.
The teacher gave her science project a seal of approval.
Getting his father's seal of approval meant the world to him.
UsageSay something has your seal of approval.
Note
- 9A strip or cover that breaks or tears if a container is opened.
Like the plastic wrap on a bottle that tears when you first open it.
Don't buy the medicine if the seal is broken.
She peeled back the seal on the new jar of coffee.
UsageSay break the seal when you open a sealed container.
Note
- 10
- 11To officially hide court or police records from the public, usually because a judge orders it.
The judge agreed to seal the records from his trial as a teenager.
Her lawyer asked the court to seal the case.
Oppositeunseal
Note
- 12To go out hunting seals for their fur, meat, or oil.
Like fishing, but going after seals instead of fish.
Their grandfathers used to seal along the icy coast each spring.
Every spring, my grandfather went sealing on the ice near Newfoundland.
Note
Less common meanings
- 13To put an official stamp or seal on something to show it is real or approved.
Like stamping a letter with a special mark to show it's official.
The notary sealed the contract before filing it.
Officials seal every land deed with the county stamp.
Similarstamp
- 14
- 15
- 16In Christian teaching, for God to choose a person and set them apart for a holy purpose or to be saved.
Like a promise so important that you can never take it back.
The pastor said that God will seal his people as his own.
The pastor taught that God seals his people as his own.
Similarconfirm, consecrate
Note
- 17To write your next move on paper and shut it in an envelope until the game restarts.
Like writing down a secret choice and hiding it until later.
At the break, the chess player sealed his next move in an envelope.
If the game stops on your turn, you must seal your next move.
Note
- 18
- 19To fix something firmly in place using cement, plaster, or a similar material.
Sealed to this wall by their rims were cazuelas ( earthenware bowls).
1898, The American ArchaeologistHere, Sealed means fixed firmly in place with cement or plaster. - 20An energy center in the body, as described in some yoga traditions.
Showing meanings only.
Practice
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Origins
The name of the sea animal comes from Old English seolh, an old Germanic word. Its deeper origin is uncertain.
Checked 1 Nov 2026 · 2 facts
- The sea animal's name comes from Old English seolh, a word of Germanic ancestry. en.wikipedia.org
- The word's deeper origin is uncertain. en.wiktionary.org
This 'seal' (a mark or stamp) comes through French from Latin sigillum, a small form of signum meaning 'sign'.
Checked 1 Nov 2026 · 2 facts
- Seal meaning a mark or stamp comes through French from Latin sigillum. en.wiktionary.org
- Latin sigillum is a diminutive of signum, meaning 'sign'. en.wiktionary.org
This 'seal' meaning to bind may come from Old English sǣlan, 'to bind'.
Checked 1 Nov 2026 · 2 facts
- The verb 'seal' meaning to bind may derive from Old English sǣlan. en.wiktionary.org
- Old English sǣlan means 'to bind'. en.wiktionary.org