noun

• (engineering) Any intermediate object that connects a smaller part to a larger part, the smaller part typically projecting sideways from the larger part.
  "To determine if your frame has this bottom bracket type, look for a notched and possibly knurled lockring on the left side (the side without the chainrings)."
• (nautical) A short crooked timber, resembling a knee, used as a support.
• (military) The cheek or side of an ordnance carriage, supporting the trunnions.
• Any of the characters “(”, “)”, “[”, “]”, “{”, “}”, “⟨”, “⟩”, “<”, “>”, or the like, used in pairs to enclose parenthetic remarks, sections of mathematical expressions, etc.

verb

• (military) To gauge the range of a target by firing equally short and long of it and ranging the weapon between the two to achieve a very accurate hit.
• (photography) To take multiple images of the same subject, using a range of exposure settings, in order to help ensure that a satisfactory image is obtained.
• (philosophy, phenomenology) In the philosophical system of Edmund Husserl and his followers, to set aside metaphysical theories and existential questions concerning what is real in order to focus philosophical attention simply on the actual content of experience.