aji

A spicy Peruvian sauce, often containing tomatoes, cilantro, hot peppers, and onions.

A chili pepper, in the context of South American cuisine.

A horse mackerel, especially the Japanese horse mackerel, Trachurus japonicus

The ‘flavour’ of a position, i.e. the extent to which it has lingering possibilities such as bad aji which may not be exploitable when they first arise yet still influence further play; good aji generally means there are few weaknesses.

Bad aji.