- Bengali Word কীল, কীলকEnglish definition(noun) a bar of a door; a bolt. (2) a sharpened piece of wood or bamboo used to fasten cattle’s; a stake; a peg; a wedge. (3) a small spiked length of metal with flat head used for fastening two pieces of wood, etc; a nail. (4) a surgeon’s instrument for examining an wound, ulcer or cavity; a probe.