Raccoglierle is a compound verb formed from raccogliere (to gather, to collect) and the pronoun le (them, referring to 'le donne sole' - the lonely women).
It's an interesting word because it's not just about physically picking something up; in this context, it carries a deeper emotional meaning of wanting to embrace, comfort, and bring together these solitary women. The artist sings, "Io che vorrei raccoglierle / Ma stringerle forte tutte insieme in un momento" (I who would like to gather them up / But hold them tight all together in one moment), expressing a profound desire to alleviate their loneliness.
"Le Donne Sole" ("Lonely Women") follows a group of single women out for the night, driving in twos and threes to cold city streets, fixing their hair in the bathroom, and coming back to the table looking their best. Biagio Antonacci watches them hoping for a compliment, telling half-true stories to feel a little less alone.
He wishes he could gather them up, hold them close, and make them laugh, because so many of the men in their lives can't be bothered to try. He imagines telling them "I'm here, I'm here," insisting that it wouldn't take much for someone to actually pay attention. It's a gentle, sympathetic song about the loneliness that can hide behind a night out, and about wanting to be the one who notices.