sunthlibo describes a crowd pressing closely against a person.

The attested use describes the physical pressure of a crowd close around a person: the crowd follows and presses against him in Mark 5:24, and the disciples point to that surrounding pressure in Mark 5:31.

1. Crowd pressing closely around someone · dominant

   In Mark 5:24, συνέθλιβον is an imperfect active indicative plural form in the clause about a great crowd following him; the APB renders the crowd as having "pressed against him." In Mark 5:31, the present active participle συνθλίβοντά refers to the crowd around the person addressed, and the APB renders the disciples' observation, "You see the crowd pressing against you."

   Mark 5:24Mark 5:31

In the Anselm Project Bible: Across Mark 5:24 and Mark 5:31, the APB presents the crowd as "pressed against him" and "pressing against you." These renderings fit the surrounding clauses.