a musical instrument consisting of sets of pipes activated by compressed air and controlled by keyboards
an electronic keyboard instrument producing a similar sound approximating to that of an organ
= reed organ
any of various similar cruder instruments
a specialized biological structure, e.g. the heart or a leaf, consisting of tissues and performing some specific function in an organism
My brain? It's my second-favourite organ — Woody Allen
a subordinate organization that performs designated functions
organs of government
formal a newspaper or periodical
informal a man's penis
organist noun
[partly from Old English organa via Latin organum from Greek organon tool, instrument, partly via Old French organe from Latin organum]