I. ˈād verb
Etymology: Middle English eyden, from Anglo-French aider, from Latin adjutare, frequentative of adjuvare, from ad- + juvare to help
Date: 15th century
transitive verb
: to provide with what is useful or necessary in achieving an end
intransitive verb
: to give assistance
• aid·er noun
II. noun
Date: 15th century
1. : a subsidy granted to the king by the English parliament until the 18th century for an extraordinary purpose
2.
a. : the act of helping
b. : help given : assistance
providing aid and comfort
specifically : tangible means of assistance (as money or supplies)
3.
a. : an assisting person or group — compare aide
b. : something by which assistance is given : an assisting device
an aid to understanding
a visual aid
especially : hearing aid
4. : a tribute paid by a vassal to his lord