Meaning of USEFUL in English

USEFUL

( a. )

Full of use, advantage, or profit; producing, or having power to produce, good; serviceable for any end or object; helpful toward advancing any purpose; beneficial; profitable; advantageous; as, vessels and instruments useful in a family; books useful for improvement; useful knowledge; useful arts.

Webster's Revised Unabridged English Dictionary.      Пересмотренный полный словарь английского языка Webster.