1.Definition: belonging to an early stage of technical development; characterized by simplicity and (often) crudeness
"The crude weapons and rude agricultural implements of early man"
2.Definition: conspicuously and tastelessly indecent
"A crude joke", "Crude behavior"
3.Definition: devoid of any qualifications or disguise or adornment
"The crude facts"
4.Definition: not carefully or expertly made
"Managed to make a crude splint", "A crude cabin of logs with bark still on them"
5.Definition: not processed or subjected to analysis
"Only the crude vital statistics"