'Point man' definitions:

Definition of 'point man'

(from WordNet)
noun
Someone who is the forefront of an important enterprise; "he is the president's point man on economic issues"
noun
A soldier who goes ahead of a patrol

Definition of 'Point man'

From: GCIDE
  • Point man \Point" man`\, n.; pl. -men (-men).
  • 1. (Mil.) the lead soldier in a foot patrol under combat conditions. [PJC]
  • 2. a person who takes a conspicuous public position in proposing a new idea or initiating a new policy, who may become a target of criticism for those opposed. "The Secretary of State served as point man for the administration's new China policy." [PJC]