This is the 8531st most frequent Japanese word.
押し掛け
"押し掛け" (oshikake) means "intrusion" or "showing up uninvited."
押し掛け in this sentence means showing up uninvited or unexpectedly at someone's place.
友人の家に突然押し掛けました。
I suddenly turned up at my friend's house unannounced.
押し掛け here expresses the sense of a crowd gathering eagerly at a location.
ファンが俳優のイベントに大勢で押し掛けた。
Fans flocked to the actor's event in large numbers.
押し掛け in this case implies intruding into a place purposefully and possibly assertively.