• n. 密封；印章；海豹；封条；标志
• vt. 密封；盖章
• vi. 猎海豹
• n. (Seal)人名；(英)西尔

来自古法语 seel,封印，图章，来自拉丁语 sigillum,小图片，小印，封印，来自 signum,标记， 记号，词源同 sign.原指书信上的封蜡标记，引申诸相关词义。

来自中古英语 sele,来自古英语 seolh,来自 Proto-Germanic*selhaz,海豹，来自 PIE*selk,拉，划， 词源同 sulkus,垄沟，裂缝。比喻用法，由动作代指动物本身，因海豹两条前肢较后腿为短， 在陆地上活动时，总是拖着累赘的后肢，将身体弯曲爬行，并在地面上留下一行形如沟垄的 痕迹。参照百度百科。比较 pork,猪肉，原义猪，字面意思为喜欢拱的动物，词源同 furrow, 沟，垄。

seal

seal: Seal the animal [OE] and seal ‘impressed mark, closure’ [13] are of course different words. The former goes back to a prehistoric Germanic *selkhaz, a word of unknown origin which also produced Swedish s?l and Danish s?l. The latter was borrowed from Anglo- Norman seal, a descendant of Latin sigillum. This, a diminutive form of signum (from which English gets sign), meant ‘little mark or picture’, and came to be used for such a mark distinctive of a particular person.
=> sign, signal

seal (n.1)

"design stamped on wax," especially one attached to a document as evidence of authenticity, c. 1200, from Old French seel "seal on a letter" (Modern French sceau), from Vulgar Latin *sigellum (source of Italian suggello, Spanish sello; also Old Frisian and Middle High German sigel, German Siegel), from Latin sigillum "small picture, engraved figure, seal," diminutive of signum "mark, token" (see sign (n.)). An earlier borrowing directly from Latin is represented by Old English insigel. Technical use, "what prevents the escape of a gas or liquid" is from 1853.

seal (n.2)

fish-eating mammal with flippers, Old English seolh "seal," from Proto-Germanic *selkhaz (compare Old Norse selr, Swedish sj?l, Danish s?l, Middle Low German sel, Middle Dutch seel, Old High German selah), of unknown origin, perhaps a borrowing from Finnic. Seal point "dark brown marking on a Siamese cat" is recorded from 1934, from the dark brown color of seal fur; compare seal brown "rich, dark brown color," by 1875. Old English seolhb?e, literally "seal's bath," was an Anglo-Saxon kenning for "the sea."

seal (v.)

"to fasten with (or as with) a seal," c. 1200, from seal (n.1). Meaning "to place a seal on (a document)" is recorded from mid-14c.; hence "to conclude, ratify, render official" (late 15c.). Sense of "to close up with wax, lead, cement, etc." is attested from 1660s, from the notion of wax seals on envelopes. In reference to the actions of wood-coatings, 1940. Related: Sealed; sealing. Sealing-wax is attested from c. 1300. To seal (one's) fate (1799) probably reflects the notion of a seal on an execution warrant.

1. Soldiers there are going to seal the airport off.

那里的士兵将封锁机场。

来自柯林斯例句

2. The Redskins punted. Dallas then marched 79 yards to seal the victory.

红人队选择了弃踢，达拉斯队随即跑出79码从而锁定胜局。

来自柯林斯例句

3. Write your letter and seal it in a blank envelope.

信写好后把它装进空白信封里封好。

来自柯林斯例句

4. Seal tightly then leave for four to five days to macerate.

密封之后再浸泡4至5天。

来自柯林斯例句

5. The seal on the box broke when it fell from its hiding-place.

盒子从隐藏处掉落时，封口裂开了。

来自柯林斯例句