at someone's beck and call, ready to do someone's bidding; subject to someone's slightest wish:
He has three servants at his beck and call.
Origin
1325-75;Middle Englishbecken, short variant of becnen to beckon
British Dictionary definitions for at someone's beck and call
beck1
/bɛk/
noun
1.
a nod, wave, or other gesture or signal
2.
at someone's beck and call, ready to obey someone's orders instantly; subject to someone's slightest whim
Word Origin
C14: short for becnen to beckon
beck2
/bɛk/
noun
1.
(in N England) a stream, esp a swiftly flowing one
Word Origin
Old English becc, from Old Norse bekkr; related to Old English bece, Old Saxon beki, Old High German bah brook, Sanskrit bhanga wave
Word Origin and History for at someone's beck and call
beck
n.
late 14c., "mute signal," from noun use of bekken (v.), variant of becnan "to beckon" (see beckon). Transferred sense of "slightest indication of will" is from late 15c.
Idioms and Phrases with at someone's beck and call
at someone's beck and call
Required to comply with someone's requests or commands, as in The boss expects the entire staff to be at his beck and call. The noun beck, now obsolete except in this idiom, meant “a gesture or signal of command, such as a nod or hand movement,” whereas call signifies “a vocal summons.” Also see dance attendance on