1680s, from strong (adj.) + box (n.1).
stroll
stroller
stroma
strong
strong-arm
strong-box
stronghold
strongly
strontium
strop
strophe
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}