Green’s Dictionary of Slang

drop v.4

[one drops or drops onto information]

1. [late 18C–1920s] to get to know about, to become aware of; usu. as drop down to or drop to

2. [late 19C–1900s] to understand.

3. [20C+] (US) to reveal.

4. [1940s+] (jazz/rap music) to produce, to deliver.

5. [1960s+] (US black) to explain, to enlighten.

6. [2000s] (Aus.) to pass on information; to tip off.

7. (UK Und.) to tap a telephone.

In compounds

drop cull (n.)

(UK Und.) one who supplies information to a criminal.

In phrases

drop bottom (v.)

[1990s+] (orig. US black) to drive around in one’s car playing loud (hip-hop) music with a heavy bass-line.

drop down to (v.)

[early 19C] to find out about someone’s character or plans.

drop knowledge (v.)

[1980s+] (US black) to demonstrate wisdom or skill.

drop to (v.) (also drop (up)on)

1. [mid-19C+] to become aware of, to work out, to recognize.

2. [20C+] (US Und.) to obtain, to gain.

drop word(s) (v.)

[20C+] (W.I.) to utter veiled insults, to make sarcastic comments.