3 harsh and threatening in manner or appearance the fierce faces of the players on the opposing hockey team Synonyms austere, dour, grim, flinty, forbidding, gruff, intimidating, lowering (also louring), rough, rugged, severe, stark, steely, stern, ungentleRelated Words bleak, cold, hostile, inhospitable, inimical, unfriendly, unsympathetic; adamant ...
Puffer fish from all other sources potentially contain deadly toxins and therefore are not considered safe. The liver, gonads (ovaries and testes), intestines, and skin of some puffer fish contain the toxins tetrodotoxin and/or saxitoxin.
Illustrations: Some species of poisonous puffer fish. Tetrodotoxin is considered likely to be produced by marine bacteria that are often associated with marine animals. In puffer fish, the distribution of tetrodotoxin is mainly in the ovaries (eggs), liver and skin. The flesh is normally free of toxin.