名詞 ruff:

1. an external body part consisting of feathers or hair about the neck of a bird or other animal
   同義詞：frill
2. a high tight collar
   同義詞：choker, ruffle, neck ruff
3. common Eurasian sandpiper; the male has an erectile neck ruff in breeding season
   同義詞：Philomachus pugnax
4. (card games) the act of taking a trick with a trump when unable to follow suit
   同義詞：trumping

動詞 ruff:

1. play a trump
   同義詞：trump

1. In the times of the Tudors, a man dressed in doublet and hose and wore a ruff.
   在都鐸王朝時期，男人穿緊身上衣和緊身短褲，脖子上戴寬而硬的輪狀皺領。

ruff

n.（名詞）
A stiffly starched frilled or pleated circular collar of lace, muslin, or other fine fabric, worn by men and women in the 'th and 7th centuries.
輪狀皺領：網(wǎng)眼織物平紋細布或其他細致織物做的上漿或打褶的硬圓領子，'和7世紀時男女穿戴
A distinctive collarlike projection around the neck, as of feathers on a bird or of fur on a mammal.
翎頜：圍在脖子上的領狀明顯突出物，如鳥的羽毛或哺乳動物的毛
A Eurasian sandpiper(Philomachus pugnax) the male of which has collarlike, erectile feathers around the neck during the breeding season.
磯鷂，毛領鴿：歐亞大陸的一種磯鷂（流蘇鷸） ，雄磯鷂在繁殖季節(jié)脖子周圍有領子狀可豎起羽毛

來源：
Perhaps short for ruffle
可能為 ruffle的簡寫

【引伸】
ruffed
adj.（形容詞）

---------------另--------------
ruff
ruff 2

n.（名詞）
The playing of a trump card when one cannot follow suit.
出王牌：在不跟牌時打出王牌
An old game resembling whist.
拉天牌戲：一種類似惠斯特的早期牌戲
v.tr.intr.（及物動詞和不及物動詞）
ruffed,ruff.ing,ruffs
To trump or play a trump.
出將牌，出王牌獲勝

來源：
Obsolete French ronfle, roffle [a kind of card game]
已廢法語 ronfle, roffle [一種牌戲]
from Old French ronfle
源自 古法語 ronfle
from renfler [to rise]
源自 renfler [升]
re- [re-]
re- [前綴，表示.出、放掉.]
enfler [to cause to swell] from Latin onfl3re * see inflate
enfler [使膨脹] 源自 拉丁語 onfl3re *參見 inflate

ruff
ruff 3

n.（名詞）
A small European freshwater fish(Acerina cernua) related to the perches.
梅花鱸：一種歐洲大陸的小的淡水魚（梅花鱸） ，與鱸魚有親緣關系

來源：
Middle English ruffe
中古英語 ruffe
probably from Medieval Latin rufus [a kind of fish]
可能源自 中世紀拉丁語 rufus [一種魚]