This is the 1108th most frequent Japanese word.
集まっ
"集まっ" means "gathered" or "assembled."
Here, '集まっ' appears in the past tense '集まった,' showing that the gathering event occurred at a specific time in the past.
彼らはイベントのために午後3時に集まった。
They gathered at 3 PM for the event.
In this sentence, '集まっ' serves as a progressive action, showing that the children gathered and are playing subsequently.
子供たちは公園で集まって遊んでいます。
The children are playing after gathering at the park.
The word '集まっ' is part of the verb '集まる,' indicating the action of people coming together in one place.