It means hold tightly by the neck. Hold, hug or squeeze the couple tightly during the dance. By extension have sex .
Embrace with passion to the couple to kiss her
Hang it in the neck.
Apercollar: vb. ( colloquial ) Strongly embrace. 2 Surround with arms a woman to a man, through this neck and squeezing a bit, especially when they dance: "I like to dance with Lucia because I apercolla strong ".
Do something stupidly and without order
kill someone by the neck.