Definition of tailboard in English:

tailboard

noun

British
    • ‘A tailboard from a trailer was lost on Sunday, November between 8pm and 9pm on the Stradbally Road.’
    • ‘At the command post, Pat sat on the tailboard of a crew carrier that was parked beside Assistant 2's red sedan.’

Pronunciation

tailboard

/ˈteɪlbɔːd/