yo-yo

Definition of Yo-yo in English :

1. yo-yo

a toy consisting of a spool that is reeled up and down on a string by motions of the hand

WordNet Lexical Database for English. Princeton University. 2010.

Yo-yo

noun plural -yos

1.

a toy consisting of a spool attached to a string, the end of which is held while it is repeatedly spun out and reeled in

2. US and Canadian derogatory, slang

a foolish person, esp one who is easily manipulated

verbWord forms: yo-yos, yo-yoing or yo-yoed (intransitive)

3. informal

to change repeatedly from one position to another; fluctuate

adjective

4. informal

changing repeatedly; fluctuating

nounWord forms: plural ˈyo-ˌyos

1.

a spool-like toy attached to one end of a string upon which it may be made to spin up and down

2. Slang

a person regarded as stupid, ineffectual, inept, eccentric, etc.

adjective

3. Informal

up-and-down; fluctuating; variable

verb intransitiveWord forms: ˈyo-ˌyoed or ˈyo-ˌyoing

4. Informal

to move up and down; fluctuate; vary

n. pl. yo-yos

1. A toy consisting of a flattened spool wound with string that is spun down from and reeled up to the hand by motions of the wrist.

2. Informal One that undergoes frequent abrupt shifts or reversals, as of opinion or emotion; a vacillator.

3. Slang A stupid or objectionable person.

intr.v. yo-yoed, yo-yo·ing, yo-yos
Informal

To undergo frequent abrupt shifts or reversals, as of opinion or emotion; vacillate.