second hand /ˌsɛkənd ˈhænd/noun 1/ˈsɛkənd ˌhænd/ noun 1forms 1 noun1 •An intermediate person or means; intermediary.“My Lord Oxford, by a second hand, proposed my being his chaplain, which I, by a second hand, excused. — 1826 second hand /ˈsɛkənd ˌhænd/ noun1 •On the clock face of a clock or watch, the hand (pointer) that shows the number of seconds that have passed. formssecond hands