overcrowd

over- +‎ crowd

overcrowd (third-person singular simple present overcrowds, present participle overcrowding, simple past and past participle overcrowded)

1. To fill beyond reasonable limits, with people, animals, objects or information.
   • 1961 January, “The North-East London electrification of the Great Eastern Line”, in Trains Illustrated, page 19:

     The host of business travellers between Bishops Stortford and London would scarcely take kindly to devious routing via the Southbury line; on the other hand, it is not desirable that they should overcrowd the business trains to and from Cambridge.