be thin on top

US /bi θɪn ɑn tɑp/
UK /bi θɪn ɑn tɑp/
"be thin on top" picture
1.

tener poco pelo en la coronilla, quedarse calvo

to have very little hair on the top of one's head; to be going bald

:
He started to be thin on top in his late twenties.
Empezó a tener poco pelo en la coronilla a finales de sus veintes.
My grandfather used to joke that he was just thin on top, not bald.
Mi abuelo solía bromear diciendo que solo estaba con poco pelo en la coronilla, no calvo.