"Tensly" does not appear to refer to a widely recognized term or concept. It may be a typographical error or a specific brand or product name that is not commonly known. If you meant "tensile," it relates to the ability of a material to withstand tension or stretching. Please provide more context for a more precise answer.
She was tensly when she got student of the month.
An angry horse will put his ears far back on his head, almost flat. His eyes will roll and he will often shake his head violently up and down. He will also swish his tail back and forth, meaning that he is irritated or angry. Sometimes a horse will rest one back hoof tensly on the ground and stretched back -- if this is the case, DO NOT go behind the horse, as he may be ready to kick and a horse kick to the head can be dangerous or even fatal. If a horse is in his stall, he will often have many of the same motions and movements, but you should be more careful in a stall given the limited amount of space and the unpredictability of a really angry horse. If a horse is out in pasture, he will often run, buck (or kick out), rush you, along with the other signs that he is mad.