wéi
hello (when answering the phone)
This is an interjection or onomatopoeia — it represents a sound.
喂哺
wèi bǔ
to feed (a baby)
喂奶
wèi nǎi
to breast-feed
喂料
wèi liào
to feed (also fig.)
喂母乳
wèi mǔ rǔ
breastfeeding
喂食
wèi shí
to feed
喂养
wèi yǎng
to feed (a child, domestic animal etc)
投喂
tóu wèi
to feed (an animal)
母乳喂养
mǔ rǔ wèi yǎng
良心喂狗
liáng xīn wèi gǒu
to have fed one's conscience to the dogs (idiom)