From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
juggins /dʒˈʌɡɪnz/
[Br.] [dated] Naivling <masc>, Traummännlein <neut>, blauäugiger Mensch <masc>, unbedarfter Mensch <masc> [geh.] [pej.]
Synonyms: babe in the woods, gull, dupe, sucker, mug, muggins, patsy, sap, schlemiel, simpleton