名詞 beard:

1. the hair growing on the lower part of a man's face
   同義詞：face fungus, whiskers
2. a tuft or growth of hairs or bristles on certain plants such as iris or grasses
3. a person who diverts suspicion from someone (especially a woman who accompanies a male homosexual in order to conceal his homosexuality)
4. hairy growth on or near the face of certain mammals
5. tuft of strong filaments by which e.g. a mussel makes itself fast to a fixed surface
   同義詞：byssus

動詞 beard:

1. go along the rim, like a beard around the chin

1. To my great amusement his false beard fell off.
   使我感到極其好笑的是他的假胡子掉下來了。
2. Why don't you shave your beard off?
   你怎麼不把胡子刮掉?
3. Tom has sprouted a beard since we saw him last.
   湯姆長胡子了，我們上次見到他時還沒長呢。
4. He has a sparse beard.
   他長著稀疏的胡子。
5. She finds his beard too bristly.
   她覺得他的胡須太扎人。
6. His beard fell to his chest.
   他的胡須垂到胸前。
7. He has a beard.
   他長著胡子。
8. He bearded his boss and demanded an explanation.
   他公然蔑視上司，并要求他作出解釋。

beard

n.（名詞）
The hair on a man`s chin, cheeks, and throat.
胡子：男人下顎、兩頰及喉頭的毛發(fā)
A hairy or hairlike growth such as that on or near the face of certain mammals.
頜毛：某些哺乳動物臉上或臉周圍生長的毛或毛狀物
A tuft or group of hairs or bristles on certain plants, such as barley and wheat.
芒：某些植物上的簇毛或硬毛，如大麥和小麥
One that serves to divert suspicion or attention from another.
替身：替別人引開懷疑和注意的人
v.tr.（及物動詞）
beard.ed,beard.ing,beards
To furnish with a beard.
使有胡須
To confront boldly.See Synonyms at defy
公然反對，向…挑戰(zhàn)參見 defy

來源：
Middle English berd
中古英語 berd
from Old English beard * see bhardh-3-
源自 古英語 beard *參見 bhardh-3-

【引伸】
beard.ed
adj.（形容詞）
beard.edness
n.（名詞）
beard.less
adj.（形容詞）
beard.lessness
n.（名詞）