abacus in Dutch

(historical, obsolete) A table or tray scattered with sand which was used for calculating or drawing. [attested from c. 1387]

(historical, obsolete) A table or tray scattered with sand which was used for calculating or drawing. [attested from c. 1387]

A device used for performing arithmetical calculations; (rare) a table on which loose counters are placed, or (more commonly) an instrument with beads sliding on rods, or counters in grooves, with one row of beads or counters representing units, the next tens, etc. [from late 17th c.]

A device used for performing arithmetical calculations; (rare) a table on which loose counters are placed, or (more commonly) an instrument with beads sliding on rods, or counters in grooves, with one row of beads or counters representing units, the next tens, etc. [from late 17th c.]