Merriam-Webster's Collegiate® Dictionary, 11th Edition
GOB
I. noun
Etymology: Middle English gobbe, probably back-formation from gobet
Date: 14th century
lump , a large amount,
II. noun
Etymology: probably from Scottish Gaelic, mouth & Irish, beak, pursed mouth
Date: circa 1550
mouth ,
III. noun
Etymology: origin unknown
Date: 1915
sailor