15-letter words containing l, o, r, d, k
- overhead locker — a locker situated above someone's seat for storing luggage, etc
- reworked fossil — a fossil eroded from sediment and redeposited in younger sediment
- round-the-clock — around-the-clock.
- smoking-related — (of a disease, illness, etc) caused by smoking tobacco, etc
- social drinking — the practice of drinking alcohol occasionally and usually only in social situations
- social-drinking — a person who drinks alcoholic beverages usually in the company of others and is in control of his or her drinking.
- thorndike's law — the principle that all learnt behaviour is regulated by rewards and punishments, proposed by Edward Lee Thorndike (1874–1949), US psychologist
- to draw a blank — If you draw a blank when you are looking for someone or something, you do not succeed in finding them.
- unknown soldier — an unidentified soldier killed in battle and buried with honors, the tomb serving as a memorial to all the unidentified dead of a nation's armed forces. The tomb of the American Unknown Soldier, commemorating a serviceman killed in World War I, was established in the Arlington National Cemetery in Virginia in 1921. In 1958, the remains of personnel of World War II and the Korean War were buried alongside the tomb (now called the Tomb of the Unknowns, ). In 1984, a serviceman of the Vietnam War was interred next to the others.
- unskilled labor — work that requires practically no training or experience for its adequate or competent performance.
- völkerwanderung — the migration of peoples, esp of Germanic and Slavic peoples into S and W Europe from 2nd to 11th centuries
- working holiday — trip combining vacation with job experience
- yorkshire dales — the valleys of the rivers flowing from the Pennines in W Yorkshire: chiefly Ribblesdale, Swaledale, Nidderdale, Wharfedale, and Wensleydale; tourist area