verb

• (intransitive) To make a short, loud, explosive noise with the vocal organs (said of animals, especially dogs).
  "The neighbour's dog is always barking."
• (intransitive) To make a clamor; to make importunate outcries.
  "And therefore they bark, and say the scripture maketh heretics."
• (transitive) To speak sharply.
  "The sergeant barked an order."

noun

• (figuratively) An abrupt loud vocal utterance.
  "Fox’s clumsy figure, negligently dressed in blue and buff, seemed unprepossessing; only his shaggy eyebrows added to the expression of his face; his voice would rise to a bark in excitement."
• (music) The quick opening of the hi-hat cymbal as it is hit, followed by its timely closing.

noun

• (countable, uncountable) The exterior covering of the trunk and branches of a tree.
  "The hardships of bark-collecting in the primeval forests of South America are of the severest kind, and undergone only by the half-civilized Indians and people of mixed race, in the pay of speculators or companies located in the towns. Those who are engaged in the business, especially the collectors themselves, are called Cascarilleros or Cascadores, from the Spanish word Cascara, bark."
• (medicine) Peruvian bark or Jesuit's bark, the bark of the cinchona from which quinine is produced.

noun

• (obsolete) A small sailing vessel, e.g. a pinnace or a fishing smack; a rowing boat or barge.
• (poetic) A sailing vessel or boat of any kind.
  "It is the star to every wandering bark"
• (nautical) A vessel, typically with three (or more) masts, with the foremasts (or fore- and mainmasts) square-rigged, and mizzenmast schooner-rigged.
  "Europeans would cross the ocean in large barks built for deck space and large holds."