gui ‧ tar S3 W3 /ɡɪˈtɑː $ -ˈtɑːr/ BrE AmE noun [countable]
[ Date: 1600-1700 ; Language: French ; Origin: guitare , from Spanish guitarra , from Arabic qitar , from Greek kithara type of stringed instrument ]
a musical instrument usually with six strings that you play by pulling the strings with your fingers or with a ↑ plectrum (=small piece of plastic, metal etc)
an acoustic/an electric/a classical guitar ⇨ ↑ bass guitar , ↑ steel guitar