11-letter words starting with ro
- rope-length — a length of standard climbing rope, normally 50–60m
- ropedancing — the act of dancing on a rope
- rose acacia — a small tree, Robinia hispida, of the legume family, native to the southeastern U.S., having drooping clusters of large, dark rose-colored flowers.
- rose beetle — rose chafer.
- rose chafer — a tan scarabaeid beetle, Macrodactylus subspinosis, that feeds on the flowers and foliage of roses, grapes, peach trees, etc.
- rose family — the plant family Rosaceae, characterized by trees, shrubs, and herbaceous plants having compound or simple leaves with stipules, flowers typically with five sepals and five petals, and fruit in a variety of forms, many of which are fleshy and edible, and including the almond, apple, apricot, blackberry, cherry, cinquefoil, hawthorn, peach, pear, plum, raspberry, rose, spirea, and strawberry.
- rose garden — where roses are grown
- rose grower — a person who grows rose plants
- rose madder — a pigment derived from anthraquinone and hydrated oxide of aluminum, characterized chiefly by its reddish color and permanence: used in painting. Compare madder lake (def 2).
- rose mallow — any of several plants of the genus Hibiscus, of the mallow family, having rose-colored flowers.
- rose quartz — a rose-red to pink variety of crystalline quartz usually found in massive form and used as a gem or ornamental stone.
- rose weevil — Fuller rose beetle.
- rose window — a circular window decorated with tracery symmetrical about the center.
- rose-tinted — excessively optimistic
- rosh hodesh — the beginning of a new month in the Jewish calendar, celebrated in a specified manner during the morning service in the synagogue.
- rosicrucian — (in the 17th and 18th centuries) a person who belonged to a secret society laying claim to various forms of occult knowledge and power and professing esoteric principles of religion.
- ross island — an island in the W Ross Sea, off the coast of Victoria Land: part of the Ross Dependency; location of Mt. Erebus.
- rostovtzeff — Michael Ivanovich [mahy-kuh l i-vah-nuh-vich] /ˈmaɪ kəl ɪˈvɑ nə vɪtʃ/ (Show IPA), 1870–1952, U.S. historian, born in Russia.
- rosy pastor — a minister or priest in charge of a church.
- rotary club — a local club of business and professional men that is a member of a world-wide organization of similar clubs (Rotary International) devoted to serving the community and promoting world peace.
- rotary dial — dial (def 4).
- rotary kiln — type of industrial oven
- rotary plow — a tined auger mounted on a horizontal power-driven shaft, for pulverizing unplowed soil preparatory to planting.
- rotary pump — a pump for transferring water or other fluids by the rotating action of its component parts, as by the meshing of vanes or screws.
- rotary wing — an airfoil that rotates about an approximately vertical axis, as that supporting a helicopter or autogiro in flight.
- rotogravure — a photomechanical process by which pictures, typeset matter, etc., are printed from an intaglio copper cylinder.
- rotor blade — one airfoil of the rotor of a rotary-wing aircraft.
- rotor cloud — a cloud within and around which the air is rotating about a horizontal axis, occurring in the lee of a large mountain barrier.
- rottenstone — a friable stone resulting from the decomposition of a siliceous limestone, used as a powder for polishing metals.
- rouen lilac — a shrub, Syringa chinensis, of France, having clusters of fragrant, lilac-purple flowers.
- rouge croix — a pursuivant at the English college of arms
- rough draft — writing: unfinished version
- rough edges — lack of refinement
- rough lemon — a variety of lemon that has orange-yellow, rough-skinned fruit and is used as a rootstock for the cultivation of other citrus fruits.
- rough music — (formerly) a loud cacophony created with tin pans, drums, etc, esp as a protest or demonstration of indignation outside someone's house
- rough paper — paper that is used for writing a rough copy
- rough stuff — violence, as physical assault, torture or shooting.
- rough trade — male homosexual prostitution, especially involving brutality or sadism.
- rough-house — rough, disorderly playing, especially indoors.
- roughing-in — the act or process of applying a base coat of plaster to a masonry surface.
- round about — In spoken English, round about means approximately.
- round angle — perigon.
- round dance — a dance performed by couples and characterized by circular or revolving movement, as the waltz.
- round steak — a steak cut from directly above the hind leg of beef.
- round table — conference, meeting
- round tower — a freestanding circular stone belfry built in Ireland from the 10th century beside a monastery and used as a place of refuge
- round-faced — having a face that is round.
- round-robin — a sequence or series.
- round-table — noting or pertaining to a conference, discussion, or deliberation in which each participant has equal status, equal time to present views, etc.: round-table discussions.
- roundarched — having semicircular arches