Velar
A velar is a sound whose passive articulator is the velum, or soft palate.
Examples
[k], [ɡ], [ŋ], [x]
Polysemy
"Velar" is also an adjective describing anything involving the velum. For describing things involving the velum in its role of controlling the opening to the nasal cavity, the adjective "velic" is often used instead.