ers Meaning, Definition & Usage

  1. noun a trivalent metallic element of the rare earth group; occurs with yttrium
    atomic number 68; erbium; Er.
  2. noun a room in a hospital or clinic staffed and equipped to provide emergency care to persons requiring immediate medical treatment
    emergency room; ER.

WordNet

Ers noun
Etymology
F., fr. L. ervum a kind of pulse, bitter vetch.
Definitions
  1. (Bot.) The bitter vetch (Ervum Ervilia).

Webster 1913