protective covering consisting of a metal part that covers the engine; "there are powerful engines under the hoods of new cars"; "the mechanic removed the cowling in order to repair the plane's engine"
a headdress that protects the head and face
the folding roof of a carriage
metal covering leading to a vent that exhausts smoke or fumes
the part of a contract that contains reservations and qualifications that are often printed in small type; "don't sign a contract without reading the fine print"
being in effect or operation; "de facto apartheid is still operational even in the `new' African nations"- Leslie Marmon Silko; "bus service is in operation during the emergency"; "the company had several operating divisions"
of or intended for or involved in military operations
pertaining to a process or series of actions for achieving a result; "operational difficulties"; "they assumed their operational positions"
the quality of being consistent with or based on logic
the state of having good sense and sound judgment; "his rationality may have been impaired"; "he had to rely less on reason than on rousing their emotions"
(of quantities) imprecise but fairly close to correct; "lasted approximately an hour"; "in just about a minute"; "he's about 30 years old"; "I've had about all I can stand"; "we meet about once a month"; "some forty people came"; "weighs around a hundred pounds"; "roughly $3,000"; "holds 3 gallons, more or less"; "20 or so people were at the party"
worthy of being recommended or suggested; prudent or wise; "such action is neither necessary nor advisable"; "extreme caution is advisable"; "it is advisable to telephone first"
marked by qualities giving the power to produce an intended effect; "written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough"