- thumb
- thumb [thum]n.[ME (with unhistoric -b) < OE thuma, akin to Ger daume(n) < IE base * tēu-, to swell, increase > L tumor: basic sense, “enlarged finger”]1. the short, thick digit of the human hand that is nearest the wrist and is opposable to the other fingers2. a corresponding part in some other vertebrate animals3. the part of a glove or mitten that covers the thumb4. Archit. OVOLOvt.1. to handle, turn, soil, or wear with or as with the thumb2. Informal to solicit or get (a ride) or make (one's way) in hitchhiking by gesturing with the thumb extended in the direction one is traveling——————all thumbsclumsy; fumbling——————☆ thumb one's nose1. to raise one's thumb to the nose with the fingers extended, as a coarse gesture of defiance or contempt2. to express defiance or contempt——————thumbs downa signal of rejection or disapproval——————thumbs upa signal of acceptance or approval——————thumb throughto glance rapidly through (a book), as by releasing or turning pages along their edge with the thumb——————under someone's thumbunder someone's influence or swaythumblessadj.
English World dictionary. V. Neufeldt. 2014.