Learn English – What’s the meaning of the expression “Grab a hold”

Wikipedia has this:

Because Stefani never disclosed the song title's meaning, reviewers came up with various interpretations. In a satirical, line-by-line analysis of the song's lyrics, OC Weekly critic Greg Stacy humorously speculated that "Gwen is apparently the captain of the cheerleader squad; she is the girl who 'hollas' the chants, not one of the girls who simply 'hollas' them back".^[6] The most commonly accepted meaning is that a hollaback girl responds to a confrontation with words but that Stefani would rather take initiative and "step it up". However, the term can be traced to American construction workers of the 1940s used to denigrate females that would positively respond to their "catcalls" or hollers.^[7]

I think he meant

"hold it against" as in "hold it next to" to cross-check both NLT and the other translations.

He likes to refer to both NLT and other versions.

Here against does not mean "opposing" which is what leads to the confusion I think