tes ‧ ti ‧ cle /ˈtestɪk ə l/ BrE AmE noun [countable]
[ Date: 1400-1500 ; Language: Latin ; Origin: testiculus 'small testicle' , from testis ; ⇨ ↑ testis ]
one of the two round organs that produce ↑ sperm in a male, that are enclosed in a bag of skin behind and below the ↑ penis
—testicular /te’stɪkjələ, te’stɪkjʊlə $ -ər/ adjective