o define a limit, determine (a thing), punish (a culprit), prevent, thrust back, throw back, sharpen. To hinder/impede/restrain, to debar or withhold or forbid/prohibit, to interdict, repel/turn away/avert, inflict castigation or punishment, distinguish or separate one thing from another by a mark or note, edge or sharpen a knife, look sharply or intently or attentively at a person or thing, to be sharp [or effective] in respect of eloquence or intellect or understanding or anger.