Word forms: plural, 3rd person singular present tense flexes, present participle flexing, past tense, past participle flexed
1N-VAR (电器用)花线,皮线 A flex is an electric cable containing two or more wires that is connected to an electrical appliance. (电器用)花线,皮线 [mainly British]
in AM, use 美国英语用 cord
2VERB 活动,屈伸(肌肉或身体某一部分) If you flex your muscles or parts of your body, you bend, move, or stretch them for a short time in order to exercise them. 活动,屈伸(肌肉或身体某一部分)
He slowly flexed his muscles and tried to stand. [VERB noun]