What is "vaccinium myrtillus"

Whortleberry \Whor"tle*ber`ry\, n. [AS. wyrtil a small shrub (dim. of wyrt wort) + E. berry. See Wort, and cf. Huckleberry, Hurtleberry.] (Bot.)

1. In England, the fruit of Vaccinium Myrtillus; also, the plant itself. See Bilberry, 1.

2. The fruit of several shrubby plants of the genus Gaylussacia; also, any one of these plants. See Huckleberry.

Bilberry \Bil"ber*ry\, n.; pl. Bilberries. [Cf. Dan. b["o]lleb[ae]r bilberry, where b["o]lle is perh. akin to E. ball.]

1. (Bot.) The European whortleberry ( Vaccinium myrtillus); also, its edible bluish black fruit.

   There pinch the maids as blue as bilberry.
   --Shak.

2. (Bot.) Any similar plant or its fruit; esp., in America, the species Vaccinium myrtilloides, Vaccinium c[ae]spitosum and Vaccinium uliginosum.

Vaccinium myrtillus is a species of shrub with edible fruit of blue color, commonly called " bilberry", "whortleberry" or European blueberry. It has much in common with the American blueberry (Vaccinium cyanococcus). It is more precisely called common bilberry or blue whortleberry, to distinguish it from other Vaccinium relatives. Regional names include blaeberry, hurtleberry, huckleberry, winberry and fraughan.