gerund
noun
ger·und ˈjer-ənd 
ˈje-rənd
1
: a verbal noun in Latin that expresses generalized or uncompleted action
2
: any of several linguistic forms analogous to the Latin gerund in languages other than Latin
especially : the English verbal noun ending in -ing that has the function of a substantive and at the same time shows the verbal features of tense, voice, and capacity to take adverbial qualifiers and to govern (see govern sense 4) objects
Example Sentences
In the sentence “Learning can be fun,” “learning” is a gerund.
Recent Examples on the Web That’s far more important than learning what a gerund might be. 
John Archibald | Jarchibald@al.com, al, 7 July 2021 Nearly every other sentence contains pungent Anglo-Saxon nouns and gerunds. Dwight Garner, New York Times, 16 Sep. 2019
John Archibald | Jarchibald@al.com, al, 7 July 2021 Nearly every other sentence contains pungent Anglo-Saxon nouns and gerunds. Dwight Garner, New York Times, 16 Sep. 2019 Word History
Etymology
Late Latin gerundium, from Latin gerundus, gerundive of gerere to bear, carry on
First Known Use
1513, in the meaning defined at sense 1