(nautical, Royal Navy) The rank of a flag officer. / Any of several equivalent ranks in several other naval or other military organizations.

plural of flag rank

At an important, elevated, or exalted level in a hierarchy or organization; high-level.

Of the highest rank

An area reserved for taxi cabs to await customers. / (Britain) The system whereby barristers must accept a brief if they are the first available when one comes up.

(idiomatic) To assert one's authority over a subordinate who disagrees.

Alternative spelling of rank and file

Belonging or pertaining to the rank and file.

(military) To march or charge out of the designated order in a military unit. / (idiomatic) To publicly disagree with one's own group or organization.

(military) To close the spacing between lines (ranks) of troops, as they are deployed across a battlefield, thereby decreasing the depth of the formation as it faces the enemy side.