from The Century Dictionary.
- noun A gaping simpleton who believes everything that he hears; a credulous person.
from the GNU version of the Collaborative International Dictionary of English.
- noun Literally, a fly swallower; hence, once who keeps his mouth open; a boor; a silly and credulous person.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun naive person.
Sorry, no etymologies found.
S. O'BRIEN: It's a fly swallower, a dupe, gobemouche.
M. O'BRIEN: I had a husky team and I told them to gobemouche.
It was only a gobemouche of a Bavarian that could ever have been induced to accept it.
Ye _gobemouche_ creatures of batrachian features, who "go a-wooing" such
Firm and steady, now, fair partner mine, whiles we run that _gobemouche_ down and trample him miserably.
Not like your Albion -- if it is yours -- who is a great gobemouche stuffed full of cotton, steaming with fog, clutching gold with one hand and the Bible with the other, that she may swell her money-bags, and seem a saint all the same; never laughing, never learning, always growling, always shuffling, who is like this spider -- look!
I suppose the Government of India is the greatest _gobemouche_ in the world.
In fact, the term "English tourist" has come to mean the same as _gobemouche_ in France; and clever Pat knows well enough that there is not a fly in the whole region of fable which is too large for the brutal Saxon to swallow.