Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • interj. Used to express hesitation or uncertainty.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • interj. Said when hesitating in speech.
  • v. To utter the word "er" when hesitating in speech, found almost exclusively in the phrase um and er.

from the GNU version of the Collaborative International Dictionary of English

  • n. the chemical symbol for erbium, a rare earth element. It has atomic number 68 and an atomic weight of 167.26.

from The Century Dictionary and Cyclopedia

  • A Middle English form of ere.
  • An English suffix, originally and properly attached to verbs to form nouns of the agent, as in baker, creeper, delver, driver, reader, sower, writer, etc.
  • A suffix of Latin origin, denoting usually a person, and often an agent, but not, like -er, usually associated with a verb.
  • A suffix of adjectives, forming the comparative degree, as in colder, deeper, greater, bigger, etc., and being cognate with the Latin comparative suffix -or, -ior, neuter -us, -ius, represented in English in major, minor, minus, prior, superior, inferior, etc.
  • A suffix of verbs, giving them a frequentative and sometimes a diminutive sense, as patter from pat, swagger from swag, flutter from float, sputter from spout, etc.
  • A suffix of certain nouns, mostly technical terms of the law (from Old Law French), as attainder, misnomer, trover, user, non-user, waiver, etc. In endeavor, endeavour, the orig. -er is disguised in the spelling.
  • In chem., the symbol for erbium.
  • In heraldry, an abbreviation of ermine.
  • A simplified spelling of err.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a trivalent metallic element of the rare earth group; occurs with yttrium
  • n. a room in a hospital or clinic staffed and equipped to provide emergency care to persons requiring immediate medical treatment

Etymologies

Mimetic (sound of hesitation) (Wiktionary)
From the interjection (Wiktionary)

Examples

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  • Er. Chemical element symbol for Erbium.

    December 16, 2007