Green’s Dictionary of Slang

jaw v.1

[jaw n.]

1. [mid-18C+] to talk, to argue.

2. [19C+] to address censoriously or abusively, to scold or lecture.

3. [mid-19C] (US) to yell.

4. [late 19C] to tell, e.g., a lie.

In derivatives

jawer (n.)

1. [mid-19C] an empty chatterer.

2. [1900s] (Aus.) one who nags.

In compounds

jaw-ass (v.) [-ass sfx]

[1960s+] (US) to talk at length.

jaw-cove (n.) [cove n. (1)] [mid-19C] (US Und.)

1. a lawyer.

2. an auctioneer.

jaw-me-dead (n.) (also jaw me dad)

[late 18C–1900s] a chatterer.

jaw-tackle (n.)

[mid-19C–1910s] (US) the mouth, the tongue, as used in talking; also attrib.

In phrases