timberhead

tim·ber·head

 (tĭm′bər-hĕd′)
n. Nautical
An upper end of a timber that projects above a deck and is used as a bollard.

timberhead

(ˈtɪmbəˌhɛd)
n
(Nautical Terms) nautical a timber, the top of which rises above deck level and is used as a bollard