gerund
Concise Oxford English Dictionary © 2008 Oxford University Press:
gerund /ˈdʒɛrʌnd/
▶noun Grammar a verb form which functions as a noun, in Latin ending in -ndum (declinable), in English ending in -ing (e.g. asking in do you mind my asking you?).
– origin C16: from late L. gerundium, from gerundum, var. of gerendum, the gerund of L. gerere ‘do’.
'gerund' also found in these Oxford entries:

