Definition of frank:
a member of the ancient Germanic peoples who spread from the Rhine into the Roman Empire in the 4th century
a smooth-textured sausage of minced beef or pork usually smoked; often served on a bread roll
stamp with a postmark to indicate date and time of mailing
exempt by means of an official pass or letter, as from customs or other checks
characterized by directness in manner or speech; without subtlety or evasion; "blunt talking and straight shooting"; "a blunt New England farmer"; "I gave them my candid opinion"; "forthright criticism"; "a forthright approach to the problem"; "tell me what you think--and you may just as well be frank"; "it is possible to be outspoken without being rude"; "plainspoken and to the point"; "a point-blank accusation"
clearly manifest; evident; "frank enjoyment"