noun

• (card games) A fixed number of cards in some bidding games awarded to the highest bidder allowing him to exchange any or all with cards in his hand.
  "I was forced to change trumps when I found the ace, jack, and nine of diamonds in the nest."
• (military) A fortified position for a weapon.
  "a machine gun nest"
• (computing) A structure consisting of nested structures, such as nested loops or nested subroutine calls.
  "Subroutine 4 cannot jump out of the subroutine nest in one step. Each return address must be popped from the stack in the order in which it was pushed onto the stack."
• (geology) An aggregated mass of any ore or mineral, in an isolated state, within a rock.

verb

• (intransitive, of animals) To build or settle into a nest.
• (intransitive) To settle into a home.
  "We loved the new house and were nesting there in two days!"
• (intransitive) To successively neatly fit inside another.
  "I bought a set of nesting mixing bowls for my mother."
• (transitive) To place in, or as if in, a nest.

noun

• (education) Initialism of native English-speaking teacher.