chilli crab /ˈt͡ʃɪli kɹæb/ noun1 •(Singapore, Malaysia) A dish originated and popularized in Singapore, made up of stir-fried crab cooked in a semi-thick sweet and savoury tomato- and chilli-based sauce.Mr Lim’s family lays claim to being the first to invent chilli crab here in 1956. — 2000 formschilli crabs