n. & v.
n. 1 the horny central part of various fruits, containing the seeds. 2 a the central or most important part of anything (also attrib. : core curriculum). b the central part, of different character from the surroundings. 3 the central region of the earth. 4 the central part of a nuclear reactor, containing the fissile material. 5 a magnetic structural unit in a computer, storing one bit of data (see BIT(4)). 6 the inner strand of an electric cable, rope, etc. 7 a piece of soft iron forming the centre of an electromagnet or an induction coil. 8 an internal mould filling a space to be left hollow in a casting. 9 the central part cut out (esp. of rock etc. in boring). 10 Archaeol. a piece of flint from which flakes or blades have been removed.
v.tr. remove the core from. core memory Computing the memory of a computer consisting of many cores. core time (in a flexitime system) the central part of the working day, when all employees must be present. corer n.
[ ME: orig. unkn. ]