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1.
1. A high-occupancy vehicle lane, or diamond lane. Allows drivers to use the lane in exchange for cash money.

2. Lane in which Nicki Minaj is currently riding in.
"I'm in the HOV lane, I'm in the HOV lane
And you, y-you-you, y-you-you Soul Train"
by KeanuReeves June 01, 2012
 
2.
A girl so slutty you have to have 2 people in her at once
Bruh Hov-lane got it from two dudes last night
by AlejandroOrtega May 16, 2014