The Chinese abacus is thought to have been created by a famous mathematician Cheng Dawei of the Ming Dynasty between 1368 and 1644. A typical elementary abacus has 10 parallel wires strung between two boards on a frame, with nine beads on each wire. Each bead has a value of 10, a multiple or sub multiple of 10.
The definition of a snigger is a contained or half held-in laugh. An example of a snigger is a quiet laugh behind a person's back. Snigger is defined as to snicker or hold back a laugh. An example of snigger is to secretly laugh at someone behind their back.
Chuckle is as fun to say as it is to do. In fact, just the sound of the word chuckle may make you feeling like chuckling, or laughing softly. Chuckle is one of many words for different kinds of laughter. These include giggle, titter, snicker, and a word that is a cross between chuckle and snort â chortle. These words are all imitative.