Definition of 'mental defective'. Word Frequency. mental defective (ËmÉntÉl dÉªËfÉktÉªv) noun. old-fashioned. a person who suffers from a learning disability or from some form of mental illness. 'You must not say anything,' I enunciated slowly, as if speaking to a mental defective.
How to Measure. To measure your horse, have him stand square on a level surface. Hold the tape or stick so it is perpendicular to the ground and beside the horse so it is even with the top point of the horseâs withers. If you are using a proper measuring stick, lower the bar so it meets the top of the horseâs withers.
1 A hand is equal to 4 inches or 10.2cms. 2  You should measure your horse from the point of the withers to the ground. 3  A horse that is 61 inches tall is 15.1 hands or 15 hands and 1 inch or 15.1hh. 4  This is calculated using (61/4 = 15.25); the .25 is the decimal equivalent of one quarter and a quarter of 4 = 1; so 15.1hh.