Refers to a physical pushing and shoving match, often in a crowd or a minor fight.
A scuffle broke out at the exit and someone got hurt.
A jostling match between drunks happened in front of the store.
Standard kanji spelling.
Mixed kana-kanji spelling, also common.
Compound of 揉み (continuative form of 揉む 'to rub, knead, jostle') and 合い (continuative form of 合う 'to do together'), literally 'mutual jostling'.