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.
When your horse is resting, try to count his pulse for 60 secondsâif heâs restless, try 30 seconds and double the amount. (Try to avoid the common advice to check for 10 seconds and multiply by 6; the results will be less accurate.) A resting heart rate higher than 60 might indicate dehydration.