Definition of "Frank" :
noun: a smooth-textured sausage of minced beef or pork usually smoked; often served on a bread roll
noun: a member of the ancient Germanic peoples who spread from the Rhine into the Roman Empire in the 4th century
verb: exempt by means of an official pass or letter, as from customs or other checks
verb: stamp with a postmark to indicate date and time of mailing
adjective: characterized by directness in manner or speech; without subtlety or evasion
"Tell me what you think--and you may just as well be frank."
adjective: clearly manifest; evident