Jack block

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(Naut.) a block fixed in the topgallant or royal rigging, used for raising and lowering light masts and spars.

See also: Jack

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Few people heed the warning of the US psychologist Jack Block, who undertook a landmark study of more than 100 toddlers, following them for three decades.
Sheldon had the ball on Jesuit's 23-yard line in the closing seconds, but quarterback Justin Herbert's pass was intercepted in the end zone by Jack Block to send the game to overtime.
FOR five days Jack Block will be viewing life from a very different perspective.
Phelps is survived and greatly missed by three daughters: Judith Felton and her husband John Felton of Boston, Lisa Phelps of Northborough, MA and Kate Phelps of Roxbury; by five grandchildren, Rebecca Felton Larkin of Springfield, VT, Frederic Felton of Boston, William Block of Chester Springs, PA, Edith Block of Revere, Erin Phelps-Alcorn of Guilderland, NY, and by two great-grandchildren: Amelia Larkin and Jack Block. Mrs.
Review Board Three (Judge Gerald Cope, Jr., chair, (305) 229-3200): Jack Block, Eli Breger, Phillip Cook, Robert M.
The following 26 officials have attained the Silver Certificate of Achievement in Leadership by completing a minimum of 36 credits in a variety of LTI Seminars, including two seminars in each of the five core competencies: Robin Beltramini, councilmember, Troy, Mich.; Jack Block Jr., councilmember, Burien, Wash.; Joyce Sutton Cameron, vice mayor, Trotwood, Ohio; Dean Chu, vice mayor, Sunnyvale, Calif.; Thomas J.
The 1980 terrorist attack was targeted at the Norfolk hotel, a five-star hotel owned by the late Jack Block, an Israeli citizen.
>> SAVING SILVERMAN: This early-2001 comedy flop features the obnoxious Jack Block as a member of a Neil Diamond tribute band who falls for his former high school football coach, R.
It's a position also taken by Jack Block, president and CEO of the Food Distributors International.
Vogt, both of Northeastern University in Boston, and Jack Block of the University of California, Berkeley.
In 1990 Jonathan Shedler and Jack Block, two psychologists at the University of California, Berkeley, were attacked as traitors in the war on drugs after they reported that "problem drug use is a symptom, not a cause, of personal and social maladjustment." But three years later, the results of a government-funded study lend support to that conclusion.