What is "holm thrush"

Holm \Holm\ (h[=o]m), n. [AS. holm, usually meaning, sea, water; akin to Icel. h[=o]lmr, holmr, an island, Dan. holm, Sw. holme, G. holm, and prob. to E. hill. Cf. Hill.]

1. An islet in a river.
   --J. Brand.

2. Low, flat land.
   --Wordsworth.

   The soft wind blowing over meadowy holms.
   --Tennyson.

   Holm thrush (Zo["o]l.), the missel thrush.