n. 25B6; verb
all the dead sycamores had to be felled : CUT DOWN, chop down, hack down, saw down, clear.
she felled him with one punch : KNOCK DOWN/OVER, knock to the ground, strike down, bring down, bring to the ground, floor, prostrate; knock out, knock unconscious; informal deck, flatten, down, lay out, KO; Brit. informal knock for six.