Learn how to say Triceps correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word triceps:
noun (plural same)
any of several muscles having three points of attachment at one end, particularly (also triceps brachii /ˈbreɪkɪʌɪ/) the large muscle at the back of the upper arm:
the full range of triceps movement
late 16th century: from Latin, literally ‘three-headed’, from tri- ‘three’ + -ceps (from caput ‘head’)