คำว่า ' tough ' ( ADJ )
มีความหมายในภาษาไทยว่า ยาก
คำนิยามในภาษาอังกฤษ (definition) :
[superl.] Having the quality of flexibility without brittleness; yielding to force without breaking; capable of resisting great strain; as, the ligaments of animals are remarkably tough.
[superl.] Not easily broken; able to endure hardship; firm; strong; as, tough sinews.
[superl.] Not easily separated; viscous; clammy; tenacious; as, tough phlegm.
[superl.] Stiff; rigid; not flexible; stubborn; as, a tough bow.
[superl.] Severe; violent; as, a tough storm.