Anagrams of: KOKER_

• a person who enjoys telling or playing jokes

• a person who does something thoughtless or annoying

• an inconspicuous clause in a document or bill that affects its meaning in a way that is not immediately apparent

• a playing card that is usually printed with a picture of a jester

• a humorous anecdote or remark intended to provoke laughter

• activity characterized by good humor

• a ludicrous or grotesque act done for fun and amusement

• a triviality not to be taken seriously

• tell a joke; speak humorously

• act in a funny or teasing way

• 100 kopecks equal 1 ruble in Russia

• To retch or heave as if to vomit.

• The cow parsley (Anthriscus sylvestris).

• (Manx) animal dung

• British slang for a look

• of or relating to the null set (a set with no members)

• a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential

• a mathematical element that when added to another number yields the same number

• the point on a scale from which positive or negative numerical quantities can be measured

• the sight setting that will cause a projectile to hit the center of the target with no wind blowing

• indicating the absence of any or all units under consideration

• having no measurable or otherwise determinable value

• indicating an initial point or origin

• adjust (an instrument or device) to zero value

• adjust (as by firing under test conditions) the zero of (a gun)

• a Scottish church