Definition of "lase"

lase

/ˈleɪz/

verb
third-person singular simple present lases, present participle lasing, simple past and past participle lased
1. (transitive) To use a laser beam on, as for cutting.
  Quotations
  When a laser zaps an electron orbiting a proton, the electron undergoes what is called the Lamb shift, absorbing energy and jumping to a higher energy level. […] But instead of lasing electrons, Knowles examined protons with particles called muons, which he calls "the electron's fat cousin."
  2010 (publication date), Daniel Lametti, "The Proton Gets Small(er)", Discover, ISSN 0274-7529, volume 32, number 1, January–February 2011, page 67
2. (transitive) To use a laser beam on, as for targeting or rangefinding.
3. (intransitive) To operate as a laser; to release coherent light due to stimulation.
  Quotations
  Charles Townes' comments that it turned out to be easy to make the first laser and that anything will lase if you hit it hard enough are incredible statements to me. If it was so easy, why didn't Columbia, Bell Labs, or TRG pull it off? They each had a head start, plenty of money, and heavy staffing.
  1988, Theodore H. Maiman, in an interview, to Richard Rhodes