名詞 flag:

1. emblem usually consisting of a rectangular piece of cloth of distinctive design
2. plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals
   同義詞：iris, fleur-de-lis, sword lily
3. a rectangular piece of fabric used as a signalling device
   同義詞：signal flag
4. a listing printed in all issues of a newspaper or magazine (usually on the editorial page) that gives the name of the publication and the names of the editorial staff, etc.
   同義詞：masthead
5. flagpole used to mark the position of the hole on a golf green
   同義詞：pin
6. stratified stone that splits into pieces suitable as paving stones
   同義詞：flagstone
7. a conspicuously marked or shaped tail

動詞 flag:

1. communicate or signal with a flag
2. provide with a flag
3. droop, sink, or settle from or as if from pressure or loss of tautness
   同義詞：sag, droop, swag
4. decorate with flags
5. become less intense
   同義詞：ease up, ease off, slacken off

1. Our exporters proudly kept the flag flying at the international trade exhibition.
   在國際貿(mào)易展覽會上，我國的出口商為國爭光。
2. The streets were flagged to celebrate the royal wedding.
   街上掛起了旗子，慶?；适一槎Y。
3. Flags are fluttering in the breeze.
   旗子在風(fēng)中飄揚。
4. That plant with purple flowers is flag.
   那種開紫花的植物是菖蒲。
5. After walking for four hours we were beginning to flag.
   步行了四個小時以后，我們開始累了。

flag

n.（名詞）
A piece of cloth, usually rectangular, of distinctive color and design, used as a symbol, a standard, a signal, or an emblem.
旗，旗幟：一塊通常呈長方形的、有特殊顏色和圖案的布，用作一種象征、標準、標志或徽章
National or other allegiance, as symbolized by a flag:
同一旗幟的組織：以一面旗幟作象征的國民或其它效忠對象：
例句：
ships of the same flag.
同屬一國的船只

A ship carrying the flag of an admiral; a flagship.
旗艦：在艦上懸掛海軍將官旗幟的艦只；旗艦
A marking device, such as a gummed strip of paper, attached to an object to attract attention or ease identification; a tab.
書簽，標簽：一種用作標志的附在其它物體上以引起注意或便于辨認的東西，例如用膠粘起來的紙條；標簽
The masthead of a newspaper.
報頭：報紙上的刊頭
Music A cross stroke added to a note that is less than a quarter note in value.
【音樂】 符尾：加在音符上的一個實質(zhì)上還不到一個四分之一音符的十字型符號
A distinctively shaped or marked tail, as of a dog or deer.
旗形尾：指有特殊形狀或標志的尾，如狗或鹿的尾巴
Computer Science A bit or series of bits with two stable states, used in software to indicate a single piece of information.
【計算機科學(xué)】 標記，特征位：具有兩種穩(wěn)定狀態(tài)的一位或一系列位，在軟件中表明單一信息
v.tr.（及物動詞）
flagged,flag.ging,flags
To mark with a flag or flags for identification or ornamentation:
懸旗，懸旗裝飾：為表明身份或裝飾而掛上旗幟：
例句：
flag a parade route; flagging parts of a manuscript for later review.
用旗標出游行路線；為以后再閱讀標出手稿的某些部分

To signal with or as if with a flag.
打旗號或象打旗號似地表示
To signal to stop:
打旗號使…停止：
例句：
flag down a passing car.
招一輛過路車停下

來源：
[Origin unknown]
[詞源不明]

【引伸】
flag.ger
n.（名詞）

---------------另--------------
flag
flag 2

n.（名詞）
A plant, such as an iris or a cattail, that has long, sword-shaped leaves.
鳶尾，香蒲：一種有長的劍形葉子的植物，例如鳶尾植物或香蒲

來源：
Middle English flagge [reed]
中古英語 flagge [蘆葦]
[of Scandinavian origin]
[源于斯堪的納維亞]

flag
flag 3

v.intr.（不及物動詞）
flagged,flag.ging,flags
To hang limply; droop.
無力地下垂；低垂
To decline in vigor or strength:
變?nèi)?，疲乏：精力或力量上減弱：
例句：
My appetite flags in the hot weather.
熱天我的胃口不好

To decline in interest:
失去興趣：
例句：
The conversation flagged.
談話變得索然無味

來源：
[Possibly of Scandinavian origin] ; akin to Old Norse flôgra [to flap about]
[可能源于斯堪的納維亞] ；類似于 古斯堪的納維亞語 flôgra [飄動，擺動]

flag
flag 4

n.（名詞）
A flagstone.
石板，扁石
v.tr.（及物動詞）
flagged,flag.ging,flags
To pave with slabs of flagstone.
用石板鋪路

來源：
Middle English flagge [piece of turf]
中古英語 flagge [一塊草地]
from Old Norse flaga [slab of stone] * see pl3k-
源自 古斯堪的納維亞語 flaga [厚石，扁石] *參見 pl3k-