U.S. colloq. [var. of gimbal-jaw: see GIMBAL 5.] A projecting lower jaw. So Jimber-jawed a. = Gimbal-jawed.
1848–60. Bartlett, Dict. Amer., Gimbal-jawed or jimber-jawed, whose lower jaw is loose and projecting.
1885. Miss Murfree, Prophet Gt. Smoky Mount., iii. 74. His long chin, of the style familiarly denominated jimber-jawed.
1889. Farmer, Americanisms, jimber-jaw.
