Real Dictionary

ruff
countable noun: A ruff is a stiff strip of cloth or other material with many small folds in it, which some people wore round their neck in former times.

ruff in American English 1
a high, frilled or pleated collar of starched muslin, lace, etc., worn by men and women in the 16th and 17th cent.
noun: a neckpiece or collar of lace, lawn, or the like, gathered or drawn into deep, full, regular folds, worn in the 16th and 17th centuries
transitive verb

ruff in American English 2
the act of trumping
to trump when unable to follow suit
trump1
noun: an act or instance of trumping when one cannot follow suit

ruff in American English 3
a small, spotted, European freshwater perch (Acerina cernua)
noun: a small European freshwater fish, Acerina cernua, of the perch family

ruff in British English 1
noun: a circular pleated, gathered, or fluted collar of lawn, muslin, etc, often starched or wired, worn by both men and women in the 16th and 17th centuries

ruff in British English 2
verb

ruff in British English 3
noun