|vet science a form of light sensitization in cattle|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|1.||to be abjectly subservient (to); curry favour (with)|
|2.||an abjectly subservient person; sycophant|
|[C20: from the notion that a subservient person kisses the backside of the person with whom he or she is currying favour]|
Solicit favor obsequiously, toady. For example, Harry was always brown nosing, but it didn't help his grades. This term originated in the military in the late 1930s, where it meant "to curry favor"; it alludes to ass-kissing when the backside being kissed is less than clean. Despite its scatological origin, today this slangy term is not considered particularly vulgar.