adj

• (obsolete) Strong; powerful; capable of acting or being used with great effect; energetic; vigorous; headstrong.
  "rank grass"
• (obsolete) Strong; powerful; capable of acting or being used with great effect; energetic; vigorous; headstrong.
  "rank land"
• (obsolete) Strong; powerful; capable of acting or being used with great effect; energetic; vigorous; headstrong.
  "The moon had spread over everything a thin layer of silver—over the rank grass, over the mud, upon the wall of matted vegetation standing higher than the wall of a temple […]"
• (obsolete) Strong; powerful; capable of acting or being used with great effect; energetic; vigorous; headstrong.
  "Your gym clothes are rank, bro – when'd you last wash 'em?"

adv

• (obsolete) Quickly, eagerly, impetuously.
  "The seely man seeing him ryde so rancke, / And ayme at him, fell flat to ground for feare […]."

noun

• (chess) One of the eight horizontal lines of squares on a chessboard (i.e., those identified by a number).
• (card games) The value of a playing card.
  "The ranks are 2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, Queen, King, and Ace."
• (music) In a pipe organ, a set of pipes of a certain quality for which each pipe corresponds to one key or pedal.
• (typically in the plural) A category of people, such as those who share an occupation or belong to an organisation.
  "a membership drawn from the ranks of wealthy European businessmen"

verb

• (transitive) To place abreast or in a line.
  "She [Diana] hath ſent (to plague vs) a huge ſauadge Boare, / Of an vn-meaſured height and magnitude. / […] / His briſtles poynted like a range of pikes / Ranck't on his backe: his foame ſnovves vvhere he feeds / His tuskes are like the Indian Oliphants."
• (intransitive) To have a ranking.
  "Their defense ranked third in the league."
• (transitive) To assign a suitable place in a class or order; to classify.
  "Ranking all things under general and special heads."
• (transitive, US) To take the rank of; to outrank.