Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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block and tackle a rigging of pulley blocks and rope or cables used to provide leverage for hauling or lifting heavy loads.
block letter a simple, hand-printed capital letter. [2 definitions]
building block a cinder block or other block used for building. [3 definitions]
chip off the old block someone who is very much like one of his or her parents.
chock-a-block of a ship's hoisting tackle, drawn close together so that the blocks are touching. [2 definitions]
chopping block a wooden block, section of log, or the like on which firewood is set to be split, or on which the heads and feet of fowls are chopped off. [2 definitions]
cinder block a partly hollow building block made of concrete and cinders.
have one's head on the chopping block to take, or be subject to, a great risk, as of being severely criticized or fired.
heart block a disorder in the coordination of the heartbeat, resulting in the atria and ventricles contracting independently of each other.
nerve block a local anesthetic that works by temporarily deadening a particular nerve, usu. administered by injection into or next to the nerve.
put one's head on the chopping block to take, or be subject to, a great risk, as of being severely criticized or fired.
saddle block anesthesia a method of spinal anesthesia, often used during childbirth, that produces numbness in the perineal area.
stumbling block an obstacle, hindrance, or difficulty in the way of obtaining progress, belief, or understanding.
swage block see swage.
wood block a block of wood on which a woodcut or wood engraving is made.