cot
n.a small bed for a baby or a young child with high sides to keep them safe. In some countries, it can also mean a simple, narrow bed that you can fold up and carry.
n.a small bed with high slatted sides for an infant; alternatively, a light, portable bed used for camping or temporary accommodation. The term is regionally distinct, with the infant-bed sense dominant in British English and the portable-bed sense common in North American English.
“The baby is sleeping soundly in her cot.”
“We set up a folding cot in the guest room for our nephew to stay the night.”
“While the nursery was equipped with a traditional wooden cot, the parents opted for a travel version during their holiday to ensure the infant remained in a familiar sleeping environment.”
Commonly used with the verb 'to put' when referring to placing a child in bed.