Noun
(uncountable) The act or process of feeding a (human) baby with a bottle, as:
(usually and especially) Implying (when not otherwise specified) feeding with commercial baby formula as contrasted with human breast milk.
Coordinate terms: breastfeeding, nursing
(sometimes also) Feeding with human breast milk expressed (pumped) earlier, as contrasted with feeding directly at the breast.
Hypernym: breastfeeding
Coordinate term: nursing
(countable) An instance (session) of such feeding activity.
Such feeding (or instance thereof) for any nonhuman animal, especially lambs (orphaned or rejected) or juvenile wildlife rescues.
Source: en.wiktionary.org