cot

Concise Oxford English Dictionary © 2008 Oxford University Press:
cot1

▶noun Brit. a small bed with high barred sides for a baby or very young child.

■ a plain narrow bed.

■ N. Amer. a camp bed.

■ Nautical a bed resembling a hammock hung from deck beams, formerly used by officers.

– origin C17: from Hindi khāṭ ‘bedstead, hammock’.

Concise Oxford English Dictionary © 2008 Oxford University Press:
cot2

▶noun

• 1 a small shelter for livestock.

• 2 archaic a small, simple cottage.

– origin OE, of Gmc origin; rel. to cote.

Concise Oxford English Dictionary © 2008 Oxford University Press:
cot3

▶abbreviation Mathematics cotangent.