bi|po|lar
/ba
I
poʊ
lə
r
/ ADJ
[usu ADJ
n]
Bipolar
systems or situations are dominated by two strong and opposing opinions or elements. [FORMAL
] □
bi|po |lar dis|o r|der (bipolar disorders ) N‑VAR Bipolar disorder is a mental illness in which a person's state of mind changes between extreme happiness and extreme depression.
birch /bɜː r tʃ/ (birches ) N‑VAR A birch or a birch tree is a type of tall tree with thin branches.
bird ◆◆◇ /bɜː r d/ (birds )
1 N‑COUNT A bird is a creature with feathers and wings. Female birds lay eggs. Most birds can fly.
2 N‑COUNT Some men refer to young women as birds . This use could cause offence. [BRIT , INFORMAL ]
3 → see also early bird , game bird
4 PHRASE If you refer to two people as birds of a feather , you mean that they have the same interests or are very similar.
5 PHRASE A bird in the hand is something that you already have and do not want to risk losing by trying to get something else.
6 PHRASE If you say that a little bird told you about something, you mean that someone has told you about it, but you do not want to say who it was.
7 PHRASE If you say that doing something will kill two birds with one stone , you mean that it will enable you to achieve two things that you want to achieve, rather than just one.
bird|cage /bɜː r dke I dʒ/ (birdcages ) also bird cage N‑COUNT A birdcage is a cage in which birds are kept.
bi rd flu N‑UNCOUNT Bird flu is a virus which can be transmitted from chickens, ducks, and other birds to people.
birdie /bɜː r di/ (birdies , birdying , birdied )
1 N‑COUNT In golf, if you get a birdie , you get the golf ball into a hole in one stroke fewer than the number of strokes which has been set as the standard for a good player.
2
VERB
If a golfer
birdies
a hole, he or she gets a birdie at that hole. □ [V
n]
bird|life /bɜː r dla I f/ also bird life N‑UNCOUNT The birdlife in a place is all the birds that live there.
bird|like
/bɜː
r
dla
I
k/ also
bird-like
ADJ
If someone has a
birdlike
manner, they move or look like a bird. □
bi rd of pa ra|dise (birds of paradise ) N‑COUNT A bird of paradise is a songbird which is found mainly in New Guinea. The male birds have very brightly coloured feathers.
bi
rd of pa
s|sage
(birds of passage
) N‑COUNT
If you refer to someone as a
bird of passage
, you mean that they are staying in a place for a short time before going to another place. □
bi rd of pre y (birds of prey ) N‑COUNT A bird of prey is a bird such as an eagle or a hawk that kills and eats other birds and animals.
bi rd's eye vie w (bird's eye views ) N‑COUNT [usu sing] You say that you have a bird's eye view of a place when you are looking down at it from a great height, so that you can see a long way but everything looks very small.
bird|song
/bɜː
r
dsɒŋ, [AM
] -sɔːŋ/ (birdsongs
) also
bird song
N‑UNCOUNT
Birdsong
is the sound of a bird or birds calling in a way which sounds musical. □
bi rd ta|ble (bird tables ) N‑COUNT A bird table is a small wooden platform on a pole which some people put in their garden in order to put food for the birds on it.
bi rd-watcher (bird-watchers ) also birdwatcher N‑COUNT A bird-watcher is a person whose hobby is watching and studying wild birds in their natural surroundings.
bi rd-watching also birdwatching N‑UNCOUNT Bird-watching is the activity of watching and studying wild birds in their natural surroundings.
Biro /ba I roʊ/ (Biros ) N‑COUNT A Biro is a pen with a small metal ball at its tip which transfers the ink onto the paper. [BRIT , TRADEMARK ]
birth ◆◇◇ /bɜː r θ/ (births )