Synonym of china pencil

A hardened wax pencil, similar to a china pencil, but water-soluble so as to be erasable with a damp cloth.

plural of marker pen

plural of marker interface

(software, object-oriented programming) A special type of interface without any constants or methods defined, and that is used just to mark a class.

plural of discourse marker

plural of fan marker

(aviation) A type of VHF radiobeacon which radiates in a tight cone pattern extending vertically from the transmitter; now generally only used to mark specific points along an ILS or IGS approach path, but formerly also commonly used to mark reporting points along en route airways.

plural of marker beacon

(aviation) An obsolescent type of marker beacon, usually used to mark en route airways but occasionally used as part of a non-precision approach, which radiates in a pattern that is considerably wider, from the perspective of an aircraft approaching the marker along the airway, than it is long (allowing an aircraft to pick up the signal from the marker even if slightly to one side of the airway's centerline).