(double modal / stacked modal, used in some dialects, chiefly Southern US) should perhaps (used to soften should and make it less of a command)

(idiomatic) to remove unwanted elements from a group

(intransitive, colloquial) To date one person regularly and exclusively.

(firearms) A ringlike groove, such as that around the cylinder of an elongated bullet for small arms to contain a lubricant, or around the rotating band of a gun projectile to lessen the resistance...