birder Definition

bird
noun

1. Any member of a class of warm-blooded vertebrate animals characterized by the possession of feathers, front limbs modified to form wings, and projecting jaws modified to form a horny beak.
(Brit)
2. slang, often considered offensive
A girl or woman.
(Brit)
3. slang
Prison or a prison sentence. See also do bird below.
Example: just out of bird
(US)
4. slang
An obscene gesture of contempt, dismissal or defiance, etc, using a raised middle finger. See also give someone the bird 2 below.
Form: the bird
5. colloq, old use
A person, especially a strange or unusual one.
Example: He's a funny old bird

Derivative: birder
noun

A birdwatcher.

Derivative: birding
noun

Birdwatching.

Idiom: birds of a feather

(rit)
colloq
People who are like each other, who share the same ideas, habits or lifestyle, etc

Idiom: do bird

(rit)
slang
To serve a prison sentence
Example: They did bird together at the Scrubs

Idiom: get the bird

Said of a performer or entertainer, etc: to be hissed or jeered at, or booed, by an audience.

To be dismissed or sacked.

Idiom: give someone the bird

(hiefly Brit)
To criticize them severely or publicly.

(S)
To make an obscene gesture of dismissal, etc (see noun 4 above) at them.

Idiom: go like a bird

colloq
Said of a machine, especially a car: to run very fast and smoothly.

Idiom: kill two birds with one stone

See under kill.

Idiom: strictly for the birds (for the birds)

(specially US)
colloq
Worthless or unimportant; acceptable only to people who are stupid or weak, etc (in the speaker's eyes).

Etymology: Anglo-Saxon bridd young bird.

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birdwatcher
birder (colloq)
noun

1. A person who studies birds by observing them closely, especially as a hobby.

Derivative: bird-watching
noun

The scientific observation of birds in their natural habitat.