- [countable, usually plural]
either of the areas of flesh in the mouth to which the teeth are attached 牙龈;齿龈;牙床 gum disease 牙龈病
Oxford Collocations Dictionaryadjective- lower
- upper
- toothless
- …
- disease
- [uncountable]
a sticky substance produced by some types of tree see also xanthan gum树胶;树脂 - [uncountable]
a type of glue used for sticking light things together, such as paper see also spirit gum黏胶,胶质物(用以粘轻东西,如纸等) - (also chewing gum)[uncountable]
a sweet that you chew (= bite many times) but do not eat 口香糖: 您咀嚼过的一种甜食但不吃 - [countable]
a fairly hard, coloured sweet that tastes of fruit and that you chew 透明果味糖 fruit gums 水果糖
Word Originnoun senses 2 to 5 Middle English: from Old French gomme, based on Latin gummi, from Greek kommi, from Egyptian kemai. noun sense 1 Old English gōma ‘inside of the mouth or throat’, of Germanic origin; related to German Gaumen ‘roof of the mouth’.
Idioms
by gum!
- (old-fashioned, informal)
used to show surprise (表示惊讶)天啊,老天,啊呀