Does 1.4 cm lymph node found in neck ultrasound means enlarged lymph node?

It's not THAT big. "Enlarged" is a matter of opinion. Any why do you ask? Unless you feel obviously sick, or a lymph node in your neck is rock-hard, fixed to surronding structures that it shouldn't be, or oversized enough for everybody to notice, it's your friend. It's helping you stay healthy. Leave it alone and stop worrying. I'm had a 1.5 cm submental node since med school.