Hoachin'
British SlangDefinition
Scottish slang: teeming or swarming; extremely crowded or infested (often with people or insects).
Examples
"The High Street was hoachin' with tourists, shoulder to shoulder all the way."
"By dusk the campsite was hoachin' wi' midges, so we dived into the tent."
"The pub was hoachin' on derby day — you could hardly get to the bar."