to tie; to fasten; to hitch
to secure (trust, patronage of customers, etc.); to keep (an employee, someone's interest, etc.); to save (someone's life)
漁師は船を港に繋ぎ止めた。
The fishermen secured their boat to the harbor.
馬を柱に繋ぎ止めて店に入った。
I tied the horse to the post and went into the store.
風船が飛ばないように手すりに繋ぎ止める。
I'll tether the balloon to the railing so it doesn't fly away.