An instance of inclining the head up and down, as to indicate agreement, or as a cursory greeting.

A reference or allusion to something.

A nomination.

“For the fifth time in her career she received a Grammy nod, she has yet to win the award.”

To incline the head up and down, as to indicate agreement.

To briefly incline the head downwards as a cursory greeting.

To sway, move up and down.