noun

• (architecture) A structural motif or finial in the shape of a sphere
• (rare) The time period of an orbit
  "Know none before us, self-begot, self-rais'd / By our own quick'ning power, when fatal course / Had circl'd his full Orbe, the birth mature / Of this our native Heav'n, Ethereal Sons."
• (poetic) The eye, seen as a luminous and spherical entity
  "A drop serene hath quenched their orbs."
• (poetic) Any revolving circular body, such as a wheel
  "The orbs Of his fierce chariot rolled."

verb

• (poetic, transitive) To form into an orb or circle.
  "Let each His adamantine coat gird well, and each Fit well his helm, gripe fast his orbed shield"
• (poetic, intransitive) To become round like an orb.
• (poetic, transitive) To encircle; to surround; to enclose.
  "The wheels were orbed with gold."

noun

• (architecture) A blank window or panel.
  "small blank windows or panels, for in later times such panels were called orbs, blind windows"

noun

• (software engineering) Initialism of object request broker.
• (historical, military) Initialism of operations record book (used by RAF).